| Ona Electro-Erosion, S.A. | ONBOARD RESEARCH CORPORATION ( Carrollton, TX ) | OncImmune Limited( Nottingham ) |
| Onadime, Inc. | On-Bright Electronics | OncImmune Limited ( Nottingham, GB ) |
| Onadime, Inc. ( Seattle, WA ) | On-Bright Electronics( AL ) | Onc-Immune Ltd. ( Nottingham, GB ) |
| Onadine, Inc. ( Seattle, WA ) | On-Bright Electronics( CA ) | Oncken Machine Service, Inc. ( Hermann, MO ) |
| Onahama Smelting and Refining Co., Ltd.( Tokyo ) | On-Bright Electronics( TW ) | Onclmmune Limited ( Nottingham, GB ) |
| Onahama Smelting and Refining Co., LTD. ( Tokyo, JP ) | On-Bright Electronics (Shanghai) Co. ( Zhangjiang Hi-Tech Park, CN ) | Onco Detectors |
| Onahama Smelting and Refining Company, Ltd. ( Tokyo, JP ) | ON-BRIGHT ELECTRONICS (SHANGHAI) CO., LTD ( Shanghai, CN ) | Onco Immunin, Inc. ( Gaithersburg, MD ) |
| Onaka; Itsuo ( Osaka, JP ) | On-Bright Electronics (Shanghai) Co., Ltd. ( Shanghai, CN ) | Onco Immunin, Inc. ( Kensington, MD ) |
| Onaka; Yasushi( Bizen ) | On-Bright Electronics (Shanghai) Co., Ltd. ( Zhangjiang Hi-Tech Park, CN ) | Oncogen ( Seattle, WA ) |
| ONAMI, LLC ( Austin, TX ) | ONCALIS AG ( Schlieren, CH ) | Oncogen Limited Partnership ( Seattle, WA ) |
| Onan Corporation | ONCALL Interactive LLC | Oncogen, a Limited Partnership ( Seattle, WA ) |
| Onan Corporation ( Fridley, MN ) | OnCall Solutions, Inc. | Oncogene Science, Inc. ( Uniondale, NY ) |
| Onan Corporation ( Minneapolis, MN ) | Once Cell Systems, Inc. ( Cambridge, MA ) | OnCoimmunin, Inc. ( Gaithersburg, MD ) |
| Onan Corporation. | OnChip Cellomics Consortium( Tokyo ) | Oncolmmunin, Inc. |
| ONARO ( Boston, MA ) | On-Chip Technologies, Inc. ( Los Altos Hills, CA ) | Oncolmmunin, Inc. ( Gaithersburg, MD ) |
| On-Board Communications, Inc. ( Dallas, TX ) | On-Chip Technologies, Inc. ( Los Gatos, CA ) | ONCOLOG MEDICAL QA AB ( UPPSALA, SE ) |
| Onboard Research Corp. ( Carrollton, TX ) | ON-CHIP TECHNOLOGIES, INC. ( Mountain View, CA ) | |