John E. Walls
59Patents
17h-index
22Co-inventors
84Inventor score
Filing activity: Aug 26, 1974 → Feb 11, 2004
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5169897A | Binary acetal polymers useful in photosensitive compositions and lithographic printing plates | Chemistry; Metallurgy | 60 | Expired |
| US4383897A | Electrochemically treated metal plates | Emerging Cross-Sectional Technologies | 41 | Expired |
| US4435496A | Photopolymer cleavage imaging system | Physics | 39 | Expired |
| US4399021A | Novel electrolytes for electrochemically treated metal plates | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5368974A | Lithographic printing plates having a hydrophilic barrier layer comprised of a copolymer of vinylphosphonic acid and acrylamide overlying an aluminum support | Performing Operations; Transporting | 29 | Expired |
| US4448647A | Electrochemically treated metal plates | Chemistry; Metallurgy | 28 | Expired |
| US4452674A | Electrolytes for electrochemically treated metal plates | Chemistry; Metallurgy | 24 | Expired |
| US4772538A | Water developable lithographic composition | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4308340A | Aqueous 2-propoxyethanol containing processing composition for lithographic printing plates | Physics | 22 | Expired |
| US5061607A | Composition for protecting the surface of lithographic printing plates | Performing Operations; Transporting | 21 | Expired |
| US4652604A | Radiation-polymerizable composition and element containing a photopolymer composition | Physics | 20 | Expired |
| US5316892A | Method for developing lithographic printing plates | Physics | 20 | Expired |
| US5035982A | Aqueous developer composition for developing negative working lithographic printing plate | Physics | 19 | Expired |
| US5275907A | Photosensitive compositions and lithographic printing plates containing acid-substituted ternary acetal polymer and copolyester with reduced propensity to blinding | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4388156A | Aluminum electrolysis in non-aqueous monomeric organic acid | Chemistry; Metallurgy | 19 | Expired |
| US5219699A | Photosensitive compositions and lithographic printing plates containing acid-substituted ternary acetal polymers | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5262270A | Photosensitive compositions and lithographic printing plates containing binary acetal polymers | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6060222A | 1Postitve-working imaging composition and element and method of forming positive image with a laser | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4502925A | Process for aluminum surface preparation | Chemistry; Metallurgy | 17 | Expired |
| US4355096A | Process for heating exposed and developed light-sensitive lithographic printing plates with carboxylic acid and amine moiety containing compounds on surface thereof | Physics | 16 | Expired |
| US4436804A | Light-sensitive polymeric diazonium condensates and reproduction compositions and materials therewith | Chemistry; Metallurgy | 16 | Expired |
| US4376814A | Ceramic deposition on aluminum | Performing Operations; Transporting | 15 | Expired |
| US4381340A | Method of treating lithographic printing plates with 2-propoxyethanol | Physics | 13 | Expired |
| US4665124A | Resin | Physics | 13 | Expired |
| US4351895A | Deletion fluid for positive printing plates | Physics | 12 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.