Easy To Use Patents Search & Patent Lawyer Directory
At Patents you can conduct a Patent Search, File a Patent Application, find a Patent Attorney, or search available technology through our Patent Exchange. Patents are available using simple keyword or date criteria. If you are looking to hire a patent attorney, you've come to the right place. Protect your idea and hire a patent lawyer.
Searching: chemistry
Search by keyword, patent number, inventor, assignee, city or state:
| Patent # | Description |
|---|---|
| US-4,820,545 |
Method of bonding ceramic orthodontic appliances A method of enhancing the bondability of ceramic orthodontic brackets or other dental attachments for improving the bonding strength between such attachments and... |
| US-4,819,711 |
Compactability and permeability control for fabricating ECP mold A method of controlling, during the act of mold fabrication in real time, the compactability and permeability of a sand mold containing an evaporative foam... |
| US-4,812,569 |
Chromogenic phthalides Chromogenic phthalides of the general formula ##STR1## wherein R.sub.1 and R.sub.2 independently of one another denote hydrogen, alkyl, alkenyl, aralkyl,... |
| US-4,806,654 |
Processes for the preparation of benzo(chalcogeno)(4,3,2-cd)indazoles
and intermediates thereof Improved processes for producing substituted benzo(chalcogeno)[4,3,2-cd] indazoles. The processes produce compounds in higher yields and of greater purity by... |
| US-4,804,475 |
Metallized membrane systems Polymer membranes metallized by wet chemistry are highly suitable, for example, for the separation of inert, reactive and fermentation gases. The metallization is... |
| US-4,801,886 |
Mounting means for water chemistry analysis device An improved method of attachment of a pH or p sensor in the recirculation/filtration line for a pool or spa or for forming a T-connection between any two pipes... |
| US-4,800,220 |
Crosslinked carboxylic copolymers usable as thickeners in aqueous media
and preparation thereof The invention relates to the chemistry of polymers and to cross-linked carboxylic copolymers obtained by copolymerization of an unsaturated carboxylic monomer, a... |
| US-4,798,655 |
Multiparameter analytical electrode structure and method of measurement An ion sensitive electrode device and method of its use in analytical and clinical chemistry are provided for measuring the concentration of an ionizable analyte... |
| US-4,795,880 |
Low pressure chemical vapor deposition furnace plasma clean apparatus Cleaning of low pressure chemical vapor deposition (LPCVD) furnaces is accomplished "in-situ" at furnace operating temperatures. Radio frequency (RF) power is... |
| US-4,794,070 |
Automatically processible photographic element comprising a non-silver
halide layer containing bromide Automatic processing equipment for photographic film, particularly radiographic black-and-white film, are required to handle different brands and constructions... |
| US-4,790,979 |
Test strip and fixture A test strip is disclosed which provides for transport and separation of heterogenous fluid samples. This test strip can be used for analysis of whole blood by... |
| US-4,789,426 |
Process for performing variable selectivity polysilicon etch A method for controllably varying the selectivity of reactive etching process for etching a polysilicon film, involves the addition of an adjustable amount of... |
| US-4,787,398 |
Glucose medical monitoring system Hand-held shirt-pocket portable glucose medical monitoring system for checking measurement of blood glucose or other body qualities. The system includes a... |
| US-4,786,729 |
Benzimidazolo-quinazolines Benzimidazolo-quinazolines of the general formula ##STR1## in which Y denotes a radical of the formula ##STR2## Y.sub.1 denotes hydrogen or alkyl, X... |
| US-4,786,394 |
Apparatus for chemical measurement of blood characteristics A clinical chemistry analyzer system for blood chemistry analysis is disclosed. Two major parts comprise the system. One part is a discardable sensor cartridge... |
| US-4,785,642 |
Decorative clip with perfume dispenser A decorative clip for use as a jewelry item is disclosed which shines and glitters in the dark and emits perfume. This shining and glittering effect is achieved... |
| US-4,783,196 |
Highly concentrated stable solutions of color-forming agents: for
pressure-sensitive recording materials Highly concentrated stable solutions of color-forming agents of the general formula ##STR1## wherein x denotes hydroxyl, alkoxy, alkenyloxy, aralkoxy,... |
| US-4,781,358 |
Apparatus for monitoring an article in sintering furnace An apparatus for measuring and regulating the variable pressure furnace gas chemistry is described. The apparatus uses a mass spectrometer for measurements, in... |
| US-4,777,288 |
Process for preparing a 4,4-diphenylbutanoic acid derivative A novel three-step process for preparing 4-(3,4-dichlorophenyl)-4-phenylbutanoic acid is disclosed, which involves (1) reducing... |
| US-4,775,558 |
Polyurethanes prepared or combined with another material and a process
for their manufacture Polyurethanes which have been prepared or combined with another material are made by combining or applying a polyurethane-forming reaction mixture or... |
| US-4,775,448 |
Isolation process A process of isolating dihydroxyacetone which is a useful intermediate in organic chemistry as well as being a sun-tanning agent. The process comprises passing a... |
| US-4,774,192 |
A dry reagent delivery system with membrane having porosity gradient Dry chemistry reagent system, kit and method for detection of an analyte such as glucose, cholesterol, urea, antigen or antibody. The reagent system is a porous... |
| US-4,772,791 |
Neuroreceptor activity assessment The effectiveness of drugs and substances that affect brain chemistry can be efficiently and relatively inexpensively monitored. Radioactive tracer substances... |
| US-4,766,550 |
Automatic on-line chemistry monitoring system A system for automatically sampling, monitoring and analyzing power plant steam cycle water supplied from various points in a power plant steam cycle system as a... |
| US-4,765,781 |
Coal slurry system A slurry of liquified gas such as carbon dioxide and finely pulverized coal particles is provided in a mixing chamber and discharged from the chamber into a... |
| US-4,762,003 |
Material test machine for tension-compression tests at high temperature Apparatus providing a device for testing the properties of material specimens at high temperatures and pressures in controlled water chemistries includes, inter... |
| US-D297,165 |
Automated chemistry analyzer for analysis of blood components or other
body fluids |
| US-4,756,785 |
Process for the preparation of adhesives and their use for the formation
of bonds The preparation and use of polyurethane-based hot melt adhesives which are cross-linked under the influence of heat comprising reacting (a) a polyisocyanate component... |
| US-4,754,034 |
Chromogenic 4,4-diaryldihydroquinazolones 4,4-diaryldihydroquinazolones of the formula ##STR1## wherein X.sup.1, X.sup.2 and X.sup.3, independently of one another, denote hydrogen, halogen, alkyl,... |
| US-4,753,896 |
Sidewall channel stop process A new way of making sidewall channel stops for silicon on insulator devices (including silicon on oxide, silicon on nitride, and silicon on sapphire devices).... |
| US-4,752,740 |
Electronic water chemistry analysis device with linear bargraph readouts An improved water analysis system for pools, spas, and the like. An oxidation-reduction potential (ORP) sensor is disposed in the recirculation/filtration system... |
| US-4,749,648 |
Agent for the determination of esterolytic and/or proteolytic enzymes Esters and agents including the esters, useful as substrates for esterolytic and/or proteolytic enzymes, said esters being compounds of the general formula: ... |
| US-4,746,592 |
Color correction in negative images using positive imaging chemistry Color correction of negative images resulting from diffusion transfer photographic recording materials is obtained through use of two dye image-providing... |
| US-4,740,448 |
Hybrid color films with dye developer and thiazolidine dye releaser Diffusion transfer color films and processes are disclosed which use dye developer chemistry to form at least one color record and which use image dye-releasing... |
| US-4,738,965 |
2-oxo-4-(2'-difl
uoromethylthiophenyl)-5-methoxycarbonyl-6-methyl-1,2,3,4-tetrahydropyrimi
dine The present invention relates to organic chemistry. The novel compound 2-oxo-4-(2'-difluoromethylthiophenyl)-5-methoxycarbonyl-6-methyl-1,2,3,4-t ... |
| US-4,738,534 |
Vertical beam spectrophotometer A vertical beam spectrophotometer for measuring the light absorption of an assay prepared using standard wet chemistry procedures and conventional solid phase... |
| US-4,731,418 |
Diels-Alder graft polymers Graft polymers between glassy polymers and elastomeric polymers prepared using Diels-Alder chemistry are disclosed. |
| US-4,727,140 |
Chromogenic 4,4-diaryl-2-oxobenzo-3,1-oxazines 4,4-Diaryl-2-oxobenzo-3,1-oxazines of the general formula ##STR1## wherein X.sup.1, X.sup.2 and X.sup.3, independently of one another, denote hydrogen,... |
| US-4,719,085 |
Mount for ammonia-sensitive test elements There is described a dry chemistry test element consisting of a chemistry unit and a mount that is ammonia-sensitive, wherein the mount is improved to prevent... |
| US-4,719,073 |
Method of monitoring an article in sintering furnace A process and apparatus for measuring and regulating the variable pressure furnace gas chemistry is described. The method makes use of mass spectrometer... |
| US-4,718,941 |
Infiltration processing of boron carbide-, boron-, and boride-reactive
metal cermets A chemical pretreatment method is used to produce boron carbide-, boron-, and boride-reactive metal composites by an infiltration process. The boron carbide or... |
| US-4,717,607 |
Method of making a fluorescent lamp A method of making fluorescent lamps having increased brightness and improved maintenance by changing the surface chemistry of the inside surface of the glass... |
| US-4,717,448 |
Reactive ion etch chemistry for providing deep vertical trenches in
semiconductor substrates A process for forming deep (>6.mu.m) trenches in a silicon substrate. The substrate is etched through a silicon oxide mask in a plasma having 75%-86% HCl,... |
| US-4,715,324 |
Nuclear steam generator sludge lancing method and apparatus A method and apparatus for removing from the tube sheet and transfer tubes of a nuclear steam generator sludge deposits which occur from the use of all volatile... |
| US-4,713,772 |
Automatic on-line chemistry monitoring system having improved
calibration unit A system for automatically sampling, monitoring and analyzing power plant steam cycle water supplied from various points in a power plant steam cycle system as a... |
| US-4,713,369 |
Oligopeptidylargininol derivatives and their homologs, a process for
their preparation, their use and agents... The invention relates to new peptidylargininol derivatives and their homologs of the general formula X being a hydrogen atom or a known protective group customary in... |
| US-4,712,561 |
Neuroreceptor activity assessment The effectiveness of drugs and substances that affect brain chemistry can be efficiently and relatively inexpensively monitored. Radioactive tracer substances... |
| US-4,708,928 |
Photothermographic element comprising particles each containing silver
halide, a silver compound and reducing agent Photothermographic imaging chemistry, and particularly color chemistry, can be contained within solid particles. Photothermographic media can then be made by... |
| US-4,705,841 |
TBEA linked epoxy-urethanes Novel epoxy-urethane resins are produced by the reaction of a urethane-alkanolamine adduct with an epoxy resin. The urethane-alkanolamine adduct is prepared by... |
| US-4,702,879 |
Nuclear reactor with passive safety system A pressurized nuclear water reactor has a substantially cylindrical flow liner with a cylindrical wall section and bottom and an open top. A barrel forms a riser... |
File A Patent Application
- Protect your idea -- Don't let someone else file first. Learn more.
- 3 Easy Steps -- Complete Form, application Review, and File. See our process.
- Attorney Review -- Have your application reviewed by a Patent Attorney. See what's included.