Patent US2623023A successfully refreshed from Google Patents.
US2623023A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Expanded, cellular, resinous products containing polyepoxides and aconitic acid
Assignee: Rohm and Haas Co
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Filing: 1951-07-28
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Granted: 1952-12-23
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Expires: 1971-07-28
Abstract
No abstract record available.
Inventors
- 👤 Joseph E Koroly
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:48
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/02; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/42; C08G59/4207; C08J2363/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR PREPARING EXPANED, CELLULAR, RESINOUS PRODUCTS WHICH COMPRISES HEATING, AT A TEMPERATURE UP TO ABOUT 140* C. TO LIQUEFY, A SOLUVENT-FREE MIXTURE OF (A) ACO NITIC ACIS AND (B) A POLYEPOXY COMPOUND OF THE CLASS CONSISTING OF VINYLCYCLOHEXANE DIOXIDE, A POLYFLYCIDYL ETHER OF POLYHYDRIC PHENOL, A POLYGLYCIDYL ETHER OF A POLYHYDRIC ALCOHOL, AND A DIEPOXIDE OF A GLYCOL BIS-EXO-DIHYDRODICYCLOPENTADIENYL ETHER WHICH HAS THE FORMULA
Claim 2
Dependent Claim
66 words
A PROCESS FOR PREPARING EXPANED, CELLULAR, RESINOUS PRODUCTS WHICH COMPRISES HEATING, AT A TEMPERATURE UP TO ABOUT 140* C. TO LIQUEFY, A SOLUVENT-FREE MIXTURE OF (A) ACO NITIC ACIS AND (B) A POLYEPOXY COMPOUND OF THE CLASS CONSISTING OF VINYLCYCLOHEXANE DIOXIDE, A POLYFLYCIDYL ETHER OF POLYHYDRIC PHENOL, A POLYGLYCIDYL ETHER OF A POLYHYDRIC ALCOHOL, AND A DIEPOXIDE OF A GLYCOL BIS-EXO-DIHYDRODICYCLOPENTADIENYL ETHER WHICH HAS THE FORMULA
References Cited (Backward Citations)
US2569920A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-12-23 | 1956-06-23 | 1956-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-23 | 1960-06-23 | 1960-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-23 | 1964-06-23 | 1964-12-23 | $7700.00 | Window Closed / Lapsed |