CENTRAL GLASS COMPANY, LIMITED
1,014Patents
433Active
1,014Granted
54Portfolio score
Filing activity: Jul 24, 1972 → May 10, 2023 · 151 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6659111B1 | Cleaning gas and method for cleaning vacuum treatment apparatus by flowing the cleaning gas | Emerging Cross-Sectional Technologies | 280 | Expired |
| US6111150A | Method for producing 1,1,1,3,3,-pentafluoropropane | Chemistry; Metallurgy | 145 | Expired |
| US6071606A | Hydrophilic film and method for forming same on substrate | Emerging Cross-Sectional Technologies | 138 | Expired |
| US6259559A | Glass arrangement including an outside glass plate, a polarization direction changing film and an adhesive layer therebetween, and an inside glass layer | Physics | 127 | Expired |
| US5510913A | Head-up display system where polarized light from a display impinges on a glass plate containing twisted nematic liquid crystal at the plate's Brewsters angle | Physics | 124 | Expired |
| US5153751A | Holographic display element | Physics | 122 | Expired |
| US5289315A | Head-up display system including a uniformly reflecting layer and a selectively reflecting layer | Physics | 121 | Expired |
| US5496621A | Glass pane with reflectance reducing coating and combiner of head-up display system | Emerging Cross-Sectional Technologies | 120 | Expired |
| US5999314A | Optical display system having a Brewster's angle regulating film | Physics | 117 | Expired |
| US6744478B1 | Heads-up display system with optical rotation layers | Physics | 115 | Expired |
| US6327089A | Laminated transparent structure for reflective display | Emerging Cross-Sectional Technologies | 113 | Expired |
| US4849766A | Vehicle window glass antenna using transparent conductive film | Electricity | 110 | Expired |
| US6042947A | Laminate including optically functioning film | Emerging Cross-Sectional Technologies | 108 | Expired |
| US5731060A | Holographic laminate | Emerging Cross-Sectional Technologies | 106 | Expired |
| US5085926A | Neat reflecting glass with multilayer coating | Emerging Cross-Sectional Technologies | 91 | Expired |
| US5830568A | Laminated glass with functional ultra-fine particles and method of producing same | Emerging Cross-Sectional Technologies | 81 | Expired |
| US5073451A | Heat insulating glass with dielectric multilayer coating | Emerging Cross-Sectional Technologies | 77 | Expired |
| US4846868A | Chemically strengthened glass article and method of producing same | Chemistry; Metallurgy | 64 | Expired |
| US4859636A | Chemically strengthened glass article formed of float glass | Emerging Cross-Sectional Technologies | 64 | Expired |
| US6852186B1 | Method and device for attaching adhesive tape | Emerging Cross-Sectional Technologies | 63 | Expired |
| US6729161B1 | Method of selectively reforming an inner part of an inorganic body | Performing Operations; Transporting | 61 | Expired |
| US4165228A | Process and apparatus for heat treating edge of plate glass | Emerging Cross-Sectional Technologies | 61 | Expired |
| US4958917A | Electrochromic device for controlling transmittance of light | Physics | 60 | Expired |
| US6235951A | Method for producing 1,1,1,3,3-pentafluoropropane | Chemistry; Metallurgy | 57 | Expired |
| US6176891A | Coated granular fertilizer and method for producing same | Chemistry; Metallurgy | 57 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.