Patent US3014883A successfully refreshed from Google Patents.
US3014883A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transparent rubber vulcanizate
Assignee: PPG Industries Inc
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Filing: 1957-03-21
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Granted: 1961-12-26
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Expires: 1977-03-21
Abstract
No abstract record available.
Inventors
- 👤 Ralph F Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:45
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A TRANSPARENT VULCANIZATE OF A COMPOSITION CONTAINING AS ESSENTIAL INGREDIENTS, A RUBBER OF THE GROUP CONSISTING OF NATURAL RUBBER, BUTADIENE-STYRENE COPOLYMERS, BUTADIENE-ACRYLONITRILE COPOLYMERS AND BUTADIENE-ISOBUTYLENE COPOLYMERS, REFINFORCED WITH FINELY DIVIDED HYDRATED SILICA HAVING AN AVERAGE ULTIMATE PARTICLE SIZE OF 0.01 TO 0.05 MICRON AND AN INDEX OF REFRACTION OF 1.450 TO 1.465, AND A VULCANIZING AGENT, SAID VULCANIZATE HAVING AN OPACITY BELOW 50 PERCENT SAID OPACITY MEASURED AS 100 TIMES THE RATIO OF GREEN LIGHT REFLECTANCE FROM A 0.075 INCH SHEET OF SAID RUBBER OVER A BLACK BACKGROUND TO THE REFLECTANCE OBTAINED FROM SAID SHEET OVER A WHITE BACKGROUND.
Claim 2
Dependent Claim
99 words
A TRANSPARENT VULCANIZATE OF A COMPOSITION CONTAINING AS ESSENTIAL INGREDIENTS, A RUBBER OF THE GROUP CONSISTING OF NATURAL RUBBER, BUTADIENE-STYRENE COPOLYMERS, BUTADIENE-ACRYLONITRILE COPOLYMERS AND BUTADIENE-ISOBUTYLENE COPOLYMERS, REFINFORCED WITH FINELY DIVIDED HYDRATED SILICA HAVING AN AVERAGE ULTIMATE PARTICLE SIZE OF 0.01 TO 0.05 MICRON AND AN INDEX OF REFRACTION OF 1.450 TO 1.465, AND A VULCANIZING AGENT, SAID VULCANIZATE HAVING AN OPACITY BELOW 50 PERCENT SAID OPACITY MEASURED AS 100 TIMES THE RATIO OF GREEN LIGHT REFLECTANCE FROM A 0.075 INCH SHEET OF SAID RUBBER OVER A BLACK BACKGROUND TO THE REFLECTANCE OBTAINED FROM SAID SHEET OVER A WHITE BACKGROUND.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-12-25 | 1965-06-26 | 1965-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-25 | 1969-06-26 | 1969-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-25 | 1973-06-26 | 1973-12-26 | $7700.00 | Window Closed / Lapsed |