| 79208885 | PERFEX | PERFEX LTD | 5440563 |
| 78129477 | PERFEX | Xerox Corporation | — |
| 76417906 | PERFEX | Xerox Corporation | — |
| 98752307 | PERFEX | PERFEX CORPORATION | 8123160 |
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| 71196048 | PERFEX | PERFEX CORPORATION | 0189528 |
| 71412891 | PERFEX | RECKITT & COLMAN INC. | 0367412 |
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| 73120807 | PERFEX | PERFEX ENERGY CONSULTANTS, INC. | 1080694 |
| 85103460 | PERFEX | LIBRINDICE, S.A. DE C.V. | 4137578 |
| 73334349 | PERFEX | CHICOPEE, INC. | 1214895 |
| 85491683 | PERFEX | Maliderma Natural Solutions Inc. | — |
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| 77235727 | PERFEX | Maliderma Natural Solutions Inc. | — |
| 75483067 | PERFEX | CURTIS COMPUTER PRODUCTS, INC. | 2289625 |
| 74505448 | PERFEX | Response Analysis Corporation | 1944999 |
| 74285314 | PERFEX | CAFLON INTERNATIONAL LIMITED | 1836112 |
| 73730829 | PERFEX | AIRWICK INDUSTRIES, INC. | 1520451 |
| 73173067 | PERFEX | JOHNSON & JOHNSON | 1112769 |
| 73005086 | PERFEX | MODINE MANUFACTURING COMPANY | 1015214 |
| 72279128 | PERFEX | WILKENS COMPANY, THE | 0853619 |
| 72266637 | PERFEX | JOHNSON & JOHNSON | 0854606 |
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| 72137755 | PERFEX | INTERNATIONAL DENTAL PRODUCTS, INC. | 0744900 |
| 72041165 | PERFEX | GENERAL POTATO & ONION DISTRIBUTORS, LTD. | 0685242 |
| 71546025 | PERFEX | PERFEX CO., THE | 0510669 |
| 71144101 | PERFEX | McQuay-Perfex Inc. | 0148703 |
