Cookson Group PLC
35Patents
0Active
35Granted
36Portfolio score
Filing activity: Dec 3, 1982 → Dec 28, 2000
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5304516A | Glaze compositions | Chemistry; Metallurgy | 44 | Expired |
| US5308803A | Glass compositions | Chemistry; Metallurgy | 33 | Expired |
| US4929423A | Low toxicity alloy compositions for joining and sealing | Chemistry; Metallurgy | 32 | Expired |
| USD448154S | Cassette for ear piercing cartridges | General | 32 | Expired |
| US5225110A | Coated particulate metallic materials | Chemistry; Metallurgy | 30 | Expired |
| US5200369A | Glaze compositions | Chemistry; Metallurgy | 24 | Expired |
| US5244848A | Glaze compositions | Chemistry; Metallurgy | 18 | Expired |
| US6571956B2 | Ear piercing cartridge and clutch holder kit | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4956441A | Electroconductive copolymers | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4992559A | Polymerizable thiophene monomers | Emerging Cross-Sectional Technologies | 12 | Expired |
| US5041169A | Flux composition | Performing Operations; Transporting | 11 | Expired |
| US4937060A | Coated inorganic materials | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6099545A | Trap door stud applicator ear piercing cartridge assembly | Human Necessities | 10 | Expired |
| US4478884A | Production of vitreous enamelled substrates | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6048355A | Ear piercing cartridges | Human Necessities | 10 | Expired |
| US5412062A | Thermally depolymerisable polyoxalate or polymalonate polymers containing hydrocarbon groups with 6-30 carbon atoms and a tertiary carbon atoms attached to bridging oxygen atom | Performing Operations; Transporting | 9 | Expired |
| US4804644A | Ceramic material | Chemistry; Metallurgy | 9 | Expired |
| US5858901A | Temperature stable dielectric | Electricity | 9 | Expired |
| US5223033A | Paste formulations for use in the electronics industry | Chemistry; Metallurgy | 8 | Expired |
| US4912218A | Substituted triazine derivatives | Chemistry; Metallurgy | 8 | Expired |
| US5350440A | Furnace with deflecting surface and method of charging metal solids | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5874124A | Process for metallizing phosphor screens | Electricity | 4 | Expired |
| USD450383S | Ear piercing cartridge | General | 4 | Expired |
| US5023216A | Ceramic material | Chemistry; Metallurgy | 4 | Expired |
| US5382865A | Composite multilayer ceramic structure | Electricity | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.