PPG Industries, Inc.
🏢 View company profile →2,830Patents
1Active
2,830Granted
48Portfolio score
Filing activity: Aug 15, 1868 → Nov 16, 2005
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5405510A | Portable analyte measuring system for multiple fluid samples | Emerging Cross-Sectional Technologies | 360 | Expired |
| US5284570A | Fluid sample analyte collector and calibration assembly | Human Necessities | 307 | Expired |
| US5273036A | Apparatus and method for monitoring respiration | Human Necessities | 307 | Expired |
| US4792536A | Transparent infrared absorbing glass and method of making | Emerging Cross-Sectional Technologies | 279 | Expired |
| US5046496A | Sensor assembly for measuring analytes in fluids | Physics | 244 | Expired |
| US4806220A | Method of making low emissivity film for high temperature processing | Chemistry; Metallurgy | 243 | Expired |
| US4898789A | Low emissivity film for automotive heat load reduction | Emerging Cross-Sectional Technologies | 229 | Expired |
| US4147679A | Water-reduced urethane coating compositions | Emerging Cross-Sectional Technologies | 212 | Expired |
| US5821001A | Coated articles | Emerging Cross-Sectional Technologies | 206 | Expired |
| US4522958A | High-solids coating composition for improved rheology control containing chemically modified inorganic microparticles | Emerging Cross-Sectional Technologies | 202 | Expired |
| US4931220A | Organic photochromic pigment particulates | Chemistry; Metallurgy | 200 | Expired |
| US5240886A | Ultraviolet absorbing, green tinted glass | Chemistry; Metallurgy | 199 | Expired |
| US5066818A | Photochromic naphthopyran compounds | Physics | 197 | Expired |
| US4637698A | Photochromic compound and articles containing the same | Physics | 180 | Expired |
| US4610771A | Sputtered films of metal alloy oxides and method of preparation thereof | Chemistry; Metallurgy | 180 | Expired |
| US5393593A | Dark gray, infrared absorbing glass composition and coated glass for privacy glazing | Emerging Cross-Sectional Technologies | 168 | Expired |
| US5328768A | Durable water repellant glass surface | Emerging Cross-Sectional Technologies | 161 | Expired |
| US4681811A | Color plus clear coatings employing polyepoxides and polyacid curing agents in the clear coat | Emerging Cross-Sectional Technologies | 161 | Expired |
| US4898790A | Low emissivity film for high temperature processing | Emerging Cross-Sectional Technologies | 161 | Expired |
| US4880667A | Photochromic plastic article and method for preparing same | Physics | 158 | Expired |
| US4816584A | Photochromic spiro(indoline)benzoxazines | Physics | 156 | Expired |
| US5071904A | Waterborne coating compositions for automotive applications | Chemistry; Metallurgy | 156 | Expired |
| US5059295A | Method of making low emissivity window | Chemistry; Metallurgy | 153 | Expired |
| US4679331A | Apparatus and method for determining contour characteristics of a contoured article | Physics | 153 | Expired |
| US5385872A | Ultraviolet absorbing green tinted glass | Chemistry; Metallurgy | 148 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.