PILKINGTON PLC
108Patents
6Active
108Granted
44Portfolio score
Filing activity: Jan 25, 1985 → May 13, 2011 · 6 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6518211B1 | Chemically toughened glasses | Emerging Cross-Sectional Technologies | 143 | Expired |
| US4913544A | Photochromic articles | Physics | 109 | Expired |
| US5255002A | Antenna for vehicle window | Electricity | 80 | Expired |
| US4851530A | Spiro-oxazine compounds | Chemistry; Metallurgy | 77 | Expired |
| US6715319B2 | Melting of glass | Emerging Cross-Sectional Technologies | 75 | Expired |
| US5448250A | Laminar microstrip patch antenna | Electricity | 75 | Expired |
| US4889413A | Manufacture of photochromic articles | Emerging Cross-Sectional Technologies | 72 | Expired |
| US6248397A | Method of depositing a silicon oxide coating on glass and the coated glass | Chemistry; Metallurgy | 66 | Expired |
| US5308805A | Neutral, low transmittance glass | Chemistry; Metallurgy | 66 | Expired |
| US5147694A | Electromagnetic shielding panel | Emerging Cross-Sectional Technologies | 61 | Expired |
| US5139850A | Electromagnetic shielding panel | Emerging Cross-Sectional Technologies | 57 | Expired |
| US5698262A | Method for forming tin oxide coating on glass | Chemistry; Metallurgy | 57 | Expired |
| US6048621A | Coated glass | Chemistry; Metallurgy | 50 | Expired |
| US4828880A | Coatings on glass | Chemistry; Metallurgy | 49 | Expired |
| US5633645A | Patch antenna assembly | Electricity | 48 | Expired |
| US5165972A | Coated glass | Emerging Cross-Sectional Technologies | 47 | Expired |
| US4826525A | Process of coating glass for reheating | Chemistry; Metallurgy | 35 | Expired |
| US4874903A | Shielding panel | Performing Operations; Transporting | 29 | Expired |
| US6280847A | Laminated glazings | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5019443A | Curved, laminated impact-resistant panel | Emerging Cross-Sectional Technologies | 28 | Expired |
| US4993774A | Edge-encapsulated glazing module | Electricity | 28 | Expired |
| US4854636A | Edge-encapsulated glazing module | Electricity | 27 | Expired |
| US4995893A | Method of making coatings on glass surfaces | Chemistry; Metallurgy | 26 | Expired |
| US5219801A | Borosilicate glass composition | Emerging Cross-Sectional Technologies | 25 | Expired |
| US5623005A | Photochromic naphthopyran compounds | Emerging Cross-Sectional Technologies | 25 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.