PA LLC
18Patents
1Active
18Granted
35Portfolio score
Filing activity: Jun 16, 1980 → Mar 17, 2011 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5431674A | Compound motion cutting device | Human Necessities | 315 | Expired |
| US5728352A | Disposable electronic diagnostic instrument | Emerging Cross-Sectional Technologies | 130 | Expired |
| US4629991A | Methods and apparatus for detecting tubular defects having a plurality of expandable arcuate segments | Physics | 34 | Expired |
| US4710712A | Method and apparatus for measuring defects in ferromagnetic elements | Fixed Constructions | 30 | Expired |
| US4715442A | Apparatus for servicing tubular strings in subterranean wells | Physics | 24 | Expired |
| US4492115A | Method and apparatus for measuring defects in ferromagnetic tubing | Physics | 23 | Expired |
| US4629985A | Method and apparatus for measuring defects in tubular members | Physics | 22 | Expired |
| US4555665A | Magnetic flux method for measuring tubular wall thickness | Physics | 21 | Expired |
| US4611170A | Coil apparatus mounted on an axially split spool for indicating wall thickness variations of a length of ferromagnetic pipe | Physics | 15 | Expired |
| US4636727A | Method and apparatus for detecting the location of defects in tubular sections moving past a well head | Physics | 15 | Expired |
| US5423836A | Endoscopic knot tying tool and method | Human Necessities | 14 | Expired |
| US4792756A | Method and apparatus for measuring axially extending defects in ferromagnetic elements | Physics | 13 | Expired |
| US4704580A | Method and apparatus for measuring the depth of local defects in ferromagnetic elements | Physics | 12 | Expired |
| US4312320A | Incinerator apparatus and method | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4578642A | Method and apparatus for measuring velocity of ferromagnetic tubing | Physics | 10 | Expired |
| US8679352B2 | Method and system for processing of aquatic species | Emerging Cross-Sectional Technologies | 7 | Active |
| US4309958A | Coating lance centralizer | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4698590A | Method and apparatus for measuring velocity of ferromagnetic tubing | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.