Patent US3072614A successfully refreshed from Google Patents.
US3072614A
Expired / Lapsed
US
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Polyurethane compositions
Assignee: Standard Oil Co
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Filing: 1960-01-29
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Granted: 1963-01-08
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Expires: 1980-01-29
Abstract
No abstract record available.
Inventors
- 👤 Benjamin A Bolton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:48
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/42; C08G18/4244; C08G18/4247; C08G18/425; C08G18/30; C08G18/32; C08G18/3203; C08G18/3221; C08G18/4252
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
A POLYURETHANE COMPOSITION CONSISTING OF THE POLYURETHANE REACTION PRODUCT (I) A TRIESTER OF AN UNSUBSTITUTED BENZENE TRICARBOXYLIC ACID AND A GLYCOL, SAID GLYCOL HAVING A MOLECULAR WEIGHT OF NOT MORE THAN ABOUT 4,000, AND (II) AN ORGANIC DIISOCYANATE, IN AN AMOUNT OF FROM ABOUT 0.5 TO ABOUT 1.5 MOLES OF SAID TRIESTER PER MOLE OF SAID DIISOCYANATE, AT AN ELEVATED REACTION TEMPERATURE FOR TIME SUFFICIENT TO PRODUCE A POLYURETHANE REACTION PRODUCT.
Claim 2
Dependent Claim
71 words
A POLYURETHANE COMPOSITION CONSISTING OF THE POLYURETHANE REACTION PRODUCT (I) A TRIESTER OF AN UNSUBSTITUTED BENZENE TRICARBOXYLIC ACID AND A GLYCOL, SAID GLYCOL HAVING A MOLECULAR WEIGHT OF NOT MORE THAN ABOUT 4,000, AND (II) AN ORGANIC DIISOCYANATE, IN AN AMOUNT OF FROM ABOUT 0.5 TO ABOUT 1.5 MOLES OF SAID TRIESTER PER MOLE OF SAID DIISOCYANATE, AT AN ELEVATED REACTION TEMPERATURE FOR TIME SUFFICIENT TO PRODUCE A POLYURETHANE REACTION PRODUCT.
References Cited (Backward Citations)
NL57722C
Cited
US2929794A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-01-07 | 1966-07-09 | 1967-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-01-07 | 1970-07-09 | 1971-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-01-07 | 1974-07-09 | 1975-01-08 | $7700.00 | Window Closed / Lapsed |