Phillip A. Waitkus
42Patents
11h-index
6Co-inventors
68Inventor score
Filing activity: Dec 3, 1979 → Jul 9, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4405786A | Addition products of di-acetylene-terminated polyimide derivatives and an dienophile having ethylene groups | Chemistry; Metallurgy | 50 | Expired |
| US4405519A | Di-Acetylene-terminated polyimide derivatives | Chemistry; Metallurgy | 46 | Expired |
| US4402878A | Addition products of di-acetylene-terminated polyimide derivatives with a polyimide having terminal non-conjugated acetylene groups | Chemistry; Metallurgy | 46 | Expired |
| US4405520A | Addition products of di-acetylene-terminated polymide derivatives and dienophiles having terminal maleimide grops | Chemistry; Metallurgy | 46 | Expired |
| US4550015A | Vitreous carbon and process for preparation thereof | Chemistry; Metallurgy | 40 | Expired |
| US4316844A | Polyimide derivatives having unsaturated terminal amic acid groups | Chemistry; Metallurgy | 18 | Expired |
| US4668496A | Vitreous carbon | Chemistry; Metallurgy | 17 | Expired |
| US4520198A | Vinylacetylene-terminated polyimide derivatives | Chemistry; Metallurgy | 15 | Expired |
| USRE32319E | Vitreous carbon and process for preparation thereof | General | 12 | Expired |
| US4277583A | Oxirane polyimide copolymers | Chemistry; Metallurgy | 12 | Expired |
| US4626569A | Process for producing a molded product and the molded product produced thereby | Chemistry; Metallurgy | 12 | Expired |
| US4526924A | Thermosettable compositions convertible to vitreous carbon and process for preparation thereof | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4656239A | Process for the preparation of phenol formaldehyde resole resins | Chemistry; Metallurgy | 9 | Expired |
| US4331794A | Polymerization products of diimides having terminal diacetylene groups | Chemistry; Metallurgy | 9 | Expired |
| US4316845A | Polyimide derivatives having terminal acetylenic groups | Chemistry; Metallurgy | 9 | Expired |
| US5750597A | Thermosetting resin compositions | Chemistry; Metallurgy | 9 | Expired |
| US5034497A | Thermosetting compositions and molding method | Chemistry; Metallurgy | 9 | Expired |
| US5360587A | Preparation of friction elements and compositions therefor | Chemistry; Metallurgy | 8 | Expired |
| US4321198A | Polyimide derivatives having acetylenic amic acid groups | Chemistry; Metallurgy | 7 | Expired |
| US4451402A | Addition products of di-acetylene-terminated polyimide with a diaryl conjugated butadiyne | Chemistry; Metallurgy | 6 | Expired |
| US4528373A | Vinylacetylene-terminated polyimide derivatives | Chemistry; Metallurgy | 6 | Expired |
| US4435323A | Vinylacetylene-terminated polymide derivatives | Chemistry; Metallurgy | 5 | Expired |
| US4624984A | Moldable composition suitable for the preparation of vitreous carbon | Chemistry; Metallurgy | 5 | Expired |
| US4880893A | Novel thermosetting compositions and molding method | Chemistry; Metallurgy | 5 | Expired |
| US4377536A | Polyamide derivatives having unsaturated terminal amic acid groups | Chemistry; Metallurgy | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.