William W. Parham
26Patents
19h-index
12Co-inventors
74Inventor score
Filing activity: Aug 17, 1989 → Dec 29, 2000
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5372864A | Toners for polyesters | Emerging Cross-Sectional Technologies | 147 | Expired |
| US5384377A | Toners for polyesters | Emerging Cross-Sectional Technologies | 130 | Expired |
| US5292855A | Water-dissipatable polyesters and amides containing near infrared fluorescent compounds copolymerized therein | Emerging Cross-Sectional Technologies | 97 | Expired |
| US5423432A | Water-dissipatable polyesters and amides containing near infrared fluorescent compounds copolymerized therein | Emerging Cross-Sectional Technologies | 74 | Expired |
| US5336714A | Water-dissipatable polyesters and amides containing near infrared fluorescent compounds copolymerized therein | Emerging Cross-Sectional Technologies | 66 | Expired |
| US6197851A | Polyester compositions containing near infrared absorbing materials to improve reheat | Performing Operations; Transporting | 55 | Expired |
| US4999418A | Polyesters colored with the residue of heat stable anthraquinone compounds | Chemistry; Metallurgy | 50 | Expired |
| US5703229A | Method for tagging thermoplastic materials with near infrared fluorophores | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5461136A | Method for tagging thermoplastic materials with near infrared fluorophores | Emerging Cross-Sectional Technologies | 44 | Expired |
| US5397819A | Thermoplastic materials containing near infrared fluorophores | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5106942A | Copolymerized methine colorant-polyester color concentrates | Chemistry; Metallurgy | 35 | Expired |
| US5102980A | Colored polyester compositions | Chemistry; Metallurgy | 34 | Expired |
| US5194463A | Light-absorbing polyurethane compositions and thermoplastic polymers colored therewith | Chemistry; Metallurgy | 34 | Expired |
| US5030708A | Colored polyester compositions | Chemistry; Metallurgy | 29 | Expired |
| US5032670A | Copolymerized anthraquinone-polyester color concentrates | Chemistry; Metallurgy | 29 | Expired |
| US5553714A | Method for detecting and separating thermoplastic containers with near infrared fluorosphores | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5281659A | Colored polyester compositions | Chemistry; Metallurgy | 24 | Expired |
| US6197223A | Method for preparing light-absorbing polymeric compositions | Chemistry; Metallurgy | 23 | Expired |
| US5274072A | Polyester composition having copolymerized therein a light absorbing compound | Chemistry; Metallurgy | 19 | Expired |
| US5194571A | Colored polyester compositions | Chemistry; Metallurgy | 12 | Expired |
| US5442086A | Ultraviolet light-absorbing compounds and sunscreen formulations and polymeric materials containing such compounds or residues thereof | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5302740A | Ultraviolet light-absorbing compounds and sunscreen formulations and polymeric materials containing such compounds or residues thereof | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5057594A | Ultraviolet light-absorbing compounds and sunscreen formulations and polymeric materials containing such compounds or residues thereof | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5453482A | Process for preparing arylsulfonyl halides | Chemistry; Metallurgy | 3 | Expired |
| US5374419A | Ultraviolet light-absorbing compounds and sunscreen formulations and polymeric materials containing such compounds or residues thereof | Emerging Cross-Sectional Technologies | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.