US3284390A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing epoxy-containing materials in the presence of a bituminous material
Assignee: Shell USA Inc
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Filing: 1960-12-30
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Granted: 1966-11-08
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Expires: 1980-12-30
Abstract
No abstract record available.
Inventors
- 👤 James R Scheibli
- 👤 Herbert A Newey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:40
CPC Classifications
C; C08; C08L; C08L63/00; C08G; C08G59/00; C08G59/02; C08G59/12; C08G59/18; C08G59/40; C08G59/42; C08L95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A PROCESS FOR PREPARING AN EPOXY-CONTAINING COMPOSITION WHICH AVOIDS THE PROBLEM OF GELATION AND IS ACCOMPLISHED WITHOUT THE USE OF A CATALYST WHICH CONSISTS OF HEATING A POLYCARBOXYLIC ACID WITH AT LEAST 1.5 TIMES THE CHEMICAL EQUIVALENT AMOUNT OF A POLYEPOXIDE CONTAINING MORE THAN ONE EPOXY GROUP IN THE PRESENCE OF A BITUMINOUS MATERIAL.
Claim 2
Dependent Claim
54 words
A PROCESS FOR PREPARING AN EPOXY-CONTAINING COMPOSITION WHICH AVOIDS THE PROBLEM OF GELATION AND IS ACCOMPLISHED WITHOUT THE USE OF A CATALYST WHICH CONSISTS OF HEATING A POLYCARBOXYLIC ACID WITH AT LEAST 1.5 TIMES THE CHEMICAL EQUIVALENT AMOUNT OF A POLYEPOXIDE CONTAINING MORE THAN ONE EPOXY GROUP IN THE PRESENCE OF A BITUMINOUS MATERIAL.
References Cited (Backward Citations)
US969449A
Cited
US2599986A
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US2528417A
Cited
US2824078A
Cited
US2970983A
Cited
US2906720A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |