Polychrome Corporation
73Patents
0Active
73Granted
36Portfolio score
Filing activity: Nov 2, 1972 → Oct 5, 1990
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4350753A | Positive acting composition yielding pre-development high visibility image after radiation exposure comprising radiation sensitive diazo oxide and haloalkyl-s-triazine with novolak and dyestuff | Physics | 77 | Expired |
| US4179304A | Finger nail lacquer | Human Necessities | 44 | Expired |
| US4174307A | Room-temperature-radiation-curable polyurethane | Emerging Cross-Sectional Technologies | 43 | Expired |
| US4289838A | Diazo-unsaturated monomer light sensitive compositions | Emerging Cross-Sectional Technologies | 36 | Expired |
| US4072589A | Process for electrolytic graining of aluminum sheet | Performing Operations; Transporting | 34 | Expired |
| US4347300A | Imaging peel apart element employing two photohardenable layers | Electricity | 30 | Expired |
| US3935080A | Method of producing an aluminum base sheet for a printing plate | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4191570A | Process for heat treating lithographic printing plates | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4104072A | Water developable lithographic printing plate having dual photosensitive layering | Physics | 27 | Expired |
| US4052275A | Process for electrolytic graining of aluminum sheet | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4340657A | Novel radiation-sensitive articles | Chemistry; Metallurgy | 20 | Expired |
| US4129486A | Ultraviolet curing printing inks having improved shelf life | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4348471A | Positive acting composition yielding pre-development high visibility image after radiation exposure comprising acid free novolak, diazo oxide and acid sensitive dyestuff | Physics | 19 | Expired |
| US4171974A | Aqueous alkali developable negative working lithographic printing plates | Physics | 17 | Expired |
| US4721665A | Method for neutralizing acidic novolak resin in a lithographic coating composition | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4214965A | Polymers and process for their preparation | Chemistry; Metallurgy | 15 | Expired |
| US4233390A | Lithographic printing plate having dual photosensitive layering | Physics | 15 | Expired |
| US4147545A | Photolithographic developing composition with organic lithium compound | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4305854A | Radiation curable pressure sensitive adhesive | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4477317A | Aluminum substrates useful for lithographic printing plates | Performing Operations; Transporting | 14 | Expired |
| US4324841A | Lithographic substrates | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4758497A | Photosensitive naphthoquinone diazide sulfonyl ester compounds for the fabrication of lithographic plates and photosensitive sheet construction with the compounds | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4152158A | Electrochemically treated photo-lithographic plates | Performing Operations; Transporting | 10 | Expired |
| US4483913A | Planographic printing plate | Performing Operations; Transporting | 10 | Expired |
| US4242417A | Lithographic substrates | Emerging Cross-Sectional Technologies | 9 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.