Howard Matrick
25Patents
16h-index
23Co-inventors
77Inventor score
Filing activity: Mar 24, 1980 → Feb 15, 1996
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5085698A | Aqueous pigmented inks for ink jet printers | Chemistry; Metallurgy | 500 | Expired |
| US5221334A | Aqueous pigmented inks for ink jet printers | Chemistry; Metallurgy | 217 | Expired |
| US5141556A | Penetrants for aqueous ink jet inks | Chemistry; Metallurgy | 171 | Expired |
| US5356464A | Aqueous ink compositions containing anti-curl agents | Chemistry; Metallurgy | 147 | Expired |
| US5180425A | Aqueous ink jet inks containing polyol/alkylene oxide condensates as cosolvents | Chemistry; Metallurgy | 128 | Expired |
| US5169436A | Sulfur-containing penetrants for ink jet inks | Chemistry; Metallurgy | 109 | Expired |
| US5160372A | Aqueous ink jet inks containing ester diol and amide diol cosolvents | Chemistry; Metallurgy | 96 | Expired |
| US5205861A | Aqueous ink jet inks containing alkylene oxide condensates of certain nitrogen heterocyclic compounds as cosolvents | Chemistry; Metallurgy | 92 | Expired |
| US5173112A | Nitrogen-containing organic cosolvents for aqueous ink jet inks | Chemistry; Metallurgy | 79 | Expired |
| US5169438A | Aqueous ink jet inks containing cycloaliphatic diol pluggage inhibitors | Chemistry; Metallurgy | 76 | Expired |
| US5224987A | Penetrants for aqueous ink jet inks | Chemistry; Metallurgy | 75 | Expired |
| US5268027A | Alkylpolyol ethers as cosolvents for ink jet inks | Chemistry; Metallurgy | 69 | Expired |
| US5250109A | Derivatives of polyoxyalkyleneamines as cosolvents for aqueous ink jet inks | Chemistry; Metallurgy | 66 | Expired |
| US5555008A | Process for alleviating bleed in printed elements | Performing Operations; Transporting | 65 | Expired |
| US4257951A | Two-step milling process for preparing pigmentary copper phthalocyanine | Chemistry; Metallurgy | 18 | Expired |
| US4965172A | Humidity-resistant proofing toners with low molecular weight polystyrene | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5801738A | Process for alleviating bleed and improving color in printed elements | Performing Operations; Transporting | 16 | Expired |
| US5416145A | Aqueous anionic dye based ink jet inks | Chemistry; Metallurgy | 13 | Expired |
| US4869996A | Process for preparing negative images on a positive-type tonable photosensitive element | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4546072A | Toners treated with polymeric quaternary ammonium salts and slip agent | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4565773A | Dry nonelectroscopic toners surface coated with nonionic siloxane-oxyalkylene block copolymer | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5039588A | Non-electroscopic prolonged tack toners | Physics | 6 | Expired |
| US4960677A | Dry nonelectroscopic toners surface coated with organofunctional substituted fluorocarbon compounds | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4561899A | Pigment toners with improved transparency | Emerging Cross-Sectional Technologies | 4 | Expired |
| US4547457A | Process of preparing toner treated with polymeric quaternary ammonium salt and slip agent | Emerging Cross-Sectional Technologies | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.