| Zemach, Jordan Valley ( Zemach, IL ) | Zen Design Solutions Limited ( Wanchai, HK ) | Zen; Jyh-Myng ( Hsien, TW ) |
| Zeman Jindrich( Dobrejovice ) | Zen Jyh-Myng | Zenasis Technologies, Inc. |
| Zeman; Miroslav( Vysok ) | Zen Optical Technology, LLC | Zenasis Technologies, Inc. ( Campbell, CA ) |
| ZEMCO MANUFACTURING INC. ( Fort Wayne, IN ) | Zen Optical Technology, LLC ( Marina Del Ray, CA ) | Zenasis Technologies, Inc. ( San Jose, CA ) |
| Zemco, Inc. ( San Ramon, CA ) | ZEN PHOTONICS CO. LTD. ( Daejeon, KR ) | Zenastra Photonics Inc. |
| Zemco, Inc. ( Walnut Creek, CA ) | ZEN PHOTONICS CO., LTD ( Daejeon, KR ) | Zenata N.V. |
| ZEMENTIS, INC. | Zen Photonics Co., Ltd.( Daejeon ) | Zenbe, Inc. |
| Zemex Inc.( Brampton ) | ZEN PHOTONICS CO., LTD. ( Daejeon, KR ) | Zen-Bio, Inc. |
| ZEMISSION BA ( Lund, SE ) | Zen Photonics Co., Ltd. ( Yusong-Gu, KR ) | ZEND TECHNOLOGIES LTD. ( Ramat Gan, IL ) |
| Zen Bio, Inc. ( Research Triangle Park, NC ) | Zen Research | Zendah Co., Ltd.( Saitama ) |
| Zen Corporation Limited | Zen Tech, Inc. ( New York, NY ) | Zeneca Corp. ( North York, CA ) |
| Zen Corporation Ltd., a UK limited corporation | Zen Voce Corporation | Zeneca Inc. ( Wilmington, DE ) |
| Zen Design Group, Inc. ( Berkley, MI ) | Zen Voce Manufacturing Pte Ltd( Singapore ) | Zeneca Limited |
| Zen Design Group, LTD ( Berkley, MI ) | Zen Voce Manufacturing Pte Ltd ( Singapore, SG ) | Zeneca Limited( Chesire ) |
| Zen Design Group, Ltd. ( Berkley, MI ) | Zen Wu Zheng Sun Tool Co. Ltd. ( Kaohsiung, TW ) | Zeneca Limited( London ) |
| Zen Design Solutions Limited | Zen Zen Electric Company Ltd. ( Seoul, KR ) | Zeneca Limited ( London, GB ) |
| Zen Design Solutions Limited( Wanchai ) | Zen; Jyh-Myng( CH ) | |