Patent US2553427A successfully refreshed from Google Patents.
US2553427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Laminated fabric bonded with an improved hydrocarbon interpolymer cement, and the cement
Assignee: Standard Oil Development Co
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Filing: 1945-05-12
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Granted: 1951-05-15
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Expires: 1965-05-12
Abstract
No abstract record available.
Inventors
- 👤 Winthrope C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:10
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/18; C09J123/20; C09J123/22; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/26; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31844; Y10T442/00; Y10T442/30; Y10T442/3472; Y10T442/3602; Y10T442/3667
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A CURABLE CEMENT COMPRISING IN COMBINATION A SOLID RUBBERY COPOLYMER OF A MAJOR PROPORTION OF ISOBUTYLENE AND A MINOR PROPORTION OF A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS PER MOLECULE, SAID COPOLYME BEING CHARACTERIZED BY AN UNSATURATION BELOW AN IODINE NUMBER OFIZED 50, A MOLECULAR WEIGHT ABOVE 20,000, AND CURABILITY WITH SULFUR TO YIELD AN ELASTIC PRODUCT A CURING AGENT, AND ABOUT 20% BY WEIGHT BASED ON WEIGHT OF COPOLYMER OF TACKIFIER CONSISTING ESSENTIALLY OF A HYDROCARBON-SOLUBLE RESIN HAVING AN IODINE NUMBER BELOW 2K AND CHOSEN FROM THE CLASS CONSISTING OF HYDROGENATED ROSIN AND HYDROGENATED ROSIN ESTER.
Claim 2
Dependent Claim
99 words
A CURABLE CEMENT COMPRISING IN COMBINATION A SOLID RUBBERY COPOLYMER OF A MAJOR PROPORTION OF ISOBUTYLENE AND A MINOR PROPORTION OF A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS PER MOLECULE, SAID COPOLYME BEING CHARACTERIZED BY AN UNSATURATION BELOW AN IODINE NUMBER OFIZED 50, A MOLECULAR WEIGHT ABOVE 20,000, AND CURABILITY WITH SULFUR TO YIELD AN ELASTIC PRODUCT A CURING AGENT, AND ABOUT 20% BY WEIGHT BASED ON WEIGHT OF COPOLYMER OF TACKIFIER CONSISTING ESSENTIALLY OF A HYDROCARBON-SOLUBLE RESIN HAVING AN IODINE NUMBER BELOW 2K AND CHOSEN FROM THE CLASS CONSISTING OF HYDROGENATED ROSIN AND HYDROGENATED ROSIN ESTER.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-14 | 1954-11-13 | 1955-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-14 | 1958-11-13 | 1959-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-14 | 1962-11-13 | 1963-05-15 | $7700.00 | Window Closed / Lapsed |