ProQuip, Inc.
8Patents
0Active
8Granted
31Portfolio score
Filing activity: Mar 23, 1981 → Dec 15, 2004
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4617039A | Separating hydrocarbon gases | Emerging Cross-Sectional Technologies | 111 | Expired |
| US4895584A | Process for C.sub.2 recovery | Mechanical Engineering; Lighting; Heating | 68 | Expired |
| US4721394A | Mixing blade construction | Performing Operations; Transporting | 31 | Expired |
| US5620250A | Jet mixer having a self-centering liquid bearing hub arrangement | Performing Operations; Transporting | 16 | Expired |
| US4376997A | Spindle assembly | Physics | 9 | Expired |
| US6076958A | Impeller with folding blade and method for using the same | Performing Operations; Transporting | 9 | Expired |
| US7237778B1 | Shut off valve assembly about a shaft of a device having an entry into a vessel | Emerging Cross-Sectional Technologies | 7 | Expired |
| US4702101A | Apparatus and method for testing the calibration of a hard disk substrate tester | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.