US3269974A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Powdered epoxy resin compositions
Assignee: Hysol Corp
•
Filing: 1963-06-25
•
Granted: 1966-08-30
•
Expires: 1983-06-25
Abstract
No abstract record available.
Inventors
- 👤 William I Childs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 14:24
CPC Classifications
C; C09; C09D; C09D163/00; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/32; C08G59/38; C08G59/40; C08G59/42; C08G59/4223; Y; Y10; Y10S; Y10S524/00; Y10S524/904
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A RESIN COMPOSITION FOR PRODUCING COATINGS WHICH RE900 TO 10,000 AND A SOFTENING POINT WITHIN THE RANGE OF ABOUT 60* TO 140*C., AND NOVALC BASED EPOXY RESIN, HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF ABOUT 500 TO 1500, A FUNCTIONALITY OF ABOUT 3 TO 7, AND A SOLTENING POINT WITHIN THE RANGE OF ABOUT 30* TO 120*C., IN PROPORTIONS BY WEIGHT WITHIN THE RANGE OF 1:1 TO 20:1 AND SUCH AS TO PROVIDE, FOR A FUSED MIXTURE THEREOF, A SOLTENING POINT ABOVE ABOUT 70*C., A HARDENER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL BIS TRIMELLITATE ANHYDRIDE, GLYCEROL BIS TRIMELLITATE ANHYDRIED, GLYCEROL TRIS TRIMELLITATE ANHYDRIDE, BENZOPHENONE DIANHYDRIDE, AND TRIMELLITIC AN HYDRIDE IN THE PROPORTION OF ABOUT 0.5 TO 1.25 EQUAIVALENTS OF ANHYDRIDE PER EPOXY EQUIVALENT OF SAID RESINS AND FILLER COMPONENTS IN THE PROPORTION OF 0 TO 70% OF SAID COMPOSITION.
Claim 2
Dependent Claim
142 words
A RESIN COMPOSITION FOR PRODUCING COATINGS WHICH RE900 TO 10,000 AND A SOFTENING POINT WITHIN THE RANGE OF ABOUT 60* TO 140*C., AND NOVALC BASED EPOXY RESIN, HAVING A MOLECULAR WEIGHT WITHIN THE RANGE OF ABOUT 500 TO 1500, A FUNCTIONALITY OF ABOUT 3 TO 7, AND A SOLTENING POINT WITHIN THE RANGE OF ABOUT 30* TO 120*C., IN PROPORTIONS BY WEIGHT WITHIN THE RANGE OF 1:1 TO 20:1 AND SUCH AS TO PROVIDE, FOR A FUSED MIXTURE THEREOF, A SOLTENING POINT ABOVE ABOUT 70*C., A HARDENER SELECTED FROM THE GROUP CONSISTING OF ETHYLENE GLYCOL BIS TRIMELLITATE ANHYDRIDE, GLYCEROL BIS TRIMELLITATE ANHYDRIED, GLYCEROL TRIS TRIMELLITATE ANHYDRIDE, BENZOPHENONE DIANHYDRIDE, AND TRIMELLITIC AN HYDRIDE IN THE PROPORTION OF ABOUT 0.5 TO 1.25 EQUAIVALENTS OF ANHYDRIDE PER EPOXY EQUIVALENT OF SAID RESINS AND FILLER COMPONENTS IN THE PROPORTION OF 0 TO 70% OF SAID COMPOSITION.
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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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |