US3795658A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Epoxy resins from dimethyladamantane bisphenols
Assignee: Sun Research and Development Co
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Filing: 1971-12-30
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Granted: 1974-03-05
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Expires: 1991-12-30
Abstract
Abstract NOVEL EPOXY RESINS HAVING THE STRUCTURE: (OXIRANYL-CH2-(O-1,4-PHENYLENE-(1-R1,5-R2-3,7- ADAMANTANYLENE)-1,4-PHENYLENE-O-CH2-CH(-0H)-CH2)N-O- 1,4-PHENYLENE-(1-R1,5-R2-3,7-ADAMANTANYLENE)-1,4- PHENYLENE)-O-)OXIRANE WHERE R1 ABD R2 ARE HYDROGEN OR HYDROCARBYL RADICALS HAVING 1 TO 20 CARBON ATOMS AND N REPRESENTS THE NUMBER OF REPEATING UNITS. THESE RESINS ARE VALUABLE IN THE MANUFACTURE OF COATINGS, MOLDING RESINS, ADHESIVES, POTTING AND ENCAPSULATION APPLICATIONS AND THE LIKE.
Inventors
- 👤 R Thompson
- 👤 I Duling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 05:41
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/24; C08G59/245; C08G59/02; C08G59/04; C08G59/06; C08G59/066
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-03-04 | 1977-09-03 | 1978-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-04 | 1981-09-03 | 1982-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-04 | 1985-09-03 | 1986-03-05 | $7700.00 | Window Closed / Lapsed |