Glasstech, Inc.
🏢 View company profile →171Patents
52Active
171Granted
46Portfolio score
Filing activity: Dec 22, 1981 → Aug 9, 2022 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4872925A | Photovoltaic cell fabrication method and panel made thereby | Emerging Cross-Sectional Technologies | 65 | Expired |
| US4913720A | Glass sheet modulated quenching | Chemistry; Metallurgy | 56 | Expired |
| US4661141A | Glass sheet press bending system | Chemistry; Metallurgy | 51 | Expired |
| US5004491A | Glass sheet forming method and apparatus utilizing lower full surface vacuum mold and upper ring mold | Chemistry; Metallurgy | 47 | Expired |
| US4470838A | Composite blasthead for quench station of glass sheet tempering system | Chemistry; Metallurgy | 42 | Expired |
| US5100453A | Method for recycling scrap mineral fibers | Chemistry; Metallurgy | 42 | Expired |
| US4575390A | Apparatus for forming glass sheets | Chemistry; Metallurgy | 36 | Expired |
| US5385786A | Apparatus and method for controlling stresses in laminated automotive glass | Emerging Cross-Sectional Technologies | 35 | Expired |
| US5472470A | Glass sheet press forming and quenching ring | Chemistry; Metallurgy | 35 | Expired |
| US5762674A | Apparatus for coating glass sheet ribbon | Chemistry; Metallurgy | 30 | Expired |
| US4946491A | Method and apparatus for glass tempering | Chemistry; Metallurgy | 26 | Expired |
| US5251010A | Optical roller wave gauge | Physics | 26 | Expired |
| US6295842A | Uniform distribution quenching of formed glass sheets | Emerging Cross-Sectional Technologies | 24 | Expired |
| US4782449A | Position controller for glass sheet processing system | Physics | 24 | Expired |
| US5078775A | Glass sheet gas support | Chemistry; Metallurgy | 24 | Expired |
| US5931981A | Process for quenching glass sheets with a cryogenic liquid and pressurized air | Chemistry; Metallurgy | 23 | Expired |
| US8074473B2 | Method for quenching formed glass sheets | Chemistry; Metallurgy | 23 | Active |
| US4609391A | Method for forming glass sheets | Chemistry; Metallurgy | 23 | Expired |
| US5938808A | Process for cryogenically quenching glass sheets | Chemistry; Metallurgy | 22 | Expired |
| US5376158A | Method for vacuum impulse forming of heated glass sheets | Chemistry; Metallurgy | 20 | Expired |
| US4512460A | Glass sheet roller conveyor including antifriction drive chain | Performing Operations; Transporting | 20 | Expired |
| US4578103A | Glass sheet processing system including topside transfer apparatus | Chemistry; Metallurgy | 20 | Expired |
| US6543255B2 | Press bending station and method for job switching | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5092916A | Glass sheet bending apparatus with thermally stable reference | Chemistry; Metallurgy | 19 | Expired |
| US4615724A | Glass sheet forming system including topside transfer apparatus | Chemistry; Metallurgy | 19 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.