US3006892A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxide resin compositions
Assignee: Ciba Products Corp
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Filing: 1959-01-27
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Granted: 1961-10-31
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Expires: 1979-01-27
Abstract
No abstract record available.
Inventors
- 👤 Nikles Otho Leroy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:31
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/04; C08G59/06; C08G59/066; C08G59/18; C08G59/40; C08G59/62; C08G59/621
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR PRODUCING ESSENTIALLY LINEAR 1,2-EPOXY RESINS OF HIGHER MOLECULAR WEIGHT AND HIGHER MELTING POINT FROM LOW MOLECULAR WEIGHT LOW MELTING POINT 1,2 EPOXY RESINS HAVING A MOLECULAR WEIGHT OF ABOUT 340 TO ABOUT 1000, WHICH COMPRISES REACTING A LOW MOLECULAR WEIGHT 1,2-EPOXY RESIN WITH A DIHYDRIC PHENOL IN ADMIXTURE WITH LITHIUM HYDROXIDE AS CATALYST, SAID LITHIUM HYDROXIDE BEING PRESENT IN EFFECTIVE AMOUNT LESS THAN 0.006% BASED ON THE WLEIGHT OF THE DIHYDRIC PHENOL.
Claim 2
Dependent Claim
75 words
A PROCESS FOR PRODUCING ESSENTIALLY LINEAR 1,2-EPOXY RESINS OF HIGHER MOLECULAR WEIGHT AND HIGHER MELTING POINT FROM LOW MOLECULAR WEIGHT LOW MELTING POINT 1,2 EPOXY RESINS HAVING A MOLECULAR WEIGHT OF ABOUT 340 TO ABOUT 1000, WHICH COMPRISES REACTING A LOW MOLECULAR WEIGHT 1,2-EPOXY RESIN WITH A DIHYDRIC PHENOL IN ADMIXTURE WITH LITHIUM HYDROXIDE AS CATALYST, SAID LITHIUM HYDROXIDE BEING PRESENT IN EFFECTIVE AMOUNT LESS THAN 0.006% BASED ON THE WLEIGHT OF THE DIHYDRIC PHENOL.
References Cited (Backward Citations)
US2615008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |