Patent US3238165A successfully refreshed from Google Patents.
US3238165A
Expired / Lapsed
US
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Mixture of polyepoxide, polythiomercattan, and petroleum derived bituminous material
Assignee: Shell USA Inc
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Filing: 1961-04-10
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Granted: 1966-03-01
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Expires: 1981-04-10
Abstract
No abstract record available.
Inventors
- 👤 Warren C Simpson
- 👤 Harry J Sommer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:34
CPC Classifications
C; C08; C08L; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A COMPOSITION CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF A MIXTURE OF (1) A POLYEPOXIDE HAVING MORE THAN ONE VIC-EPOXY GROUP, (2) A POLYTHIOPOLYMERCAPTAN, AND (3) A PETROLEUM DERIVED BITUMINOUS MATERIAL, THE AMOUNT OF THE POLYEPOXIDE MAKING UP FROM 15% TO 90% BY WEIGHT OF THE MIXTURE OF POLYEPOXIDE AND BITUMINOUS MATERIAL, AND AT LEAST .8 EQUIVALENT OF THE POLYTHIOPOLYMERCAPTAN BEING USED PER EQUIVALENT OF POLYEPOXIDE WITH AN EQUIVALENT BEING ON -SH GROUP PER EPOXIDE GROUP.
Claim 2
Dependent Claim
76 words
A COMPOSITION CONSISTING ESSENTIALLY OF THE REACTION PRODUCT OF A MIXTURE OF (1) A POLYEPOXIDE HAVING MORE THAN ONE VIC-EPOXY GROUP, (2) A POLYTHIOPOLYMERCAPTAN, AND (3) A PETROLEUM DERIVED BITUMINOUS MATERIAL, THE AMOUNT OF THE POLYEPOXIDE MAKING UP FROM 15% TO 90% BY WEIGHT OF THE MIXTURE OF POLYEPOXIDE AND BITUMINOUS MATERIAL, AND AT LEAST .8 EQUIVALENT OF THE POLYTHIOPOLYMERCAPTAN BEING USED PER EQUIVALENT OF POLYEPOXIDE WITH AN EQUIVALENT BEING ON -SH GROUP PER EPOXIDE GROUP.
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |