Proficient Systems, Inc.
7Patents
0Active
7Granted
27Portfolio score
Filing activity: Mar 15, 1982 → Sep 20, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7657465B2 | Systems and methods to facilitate selling of products and services | Physics | 85 | Expired |
| US7526439B2 | Systems and methods to facilitate selling of products and services | Physics | 83 | Expired |
| US7739149B2 | Systems and methods to facilitate selling of products and services | Physics | 66 | Expired |
| US4608725A | Litter retrieving machine | Human Necessities | 23 | Expired |
| US4603544A | Litter retrieving machine | Fixed Constructions | 12 | Expired |
| US4434011A | Method and apparatus for retrieving objects from the ground | Human Necessities | 9 | Expired |
| US4561240A | Apparatus for retrieving objects from the ground | Fixed Constructions | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.