US3089862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric reaction product of polyalkyl substituted diisocyano compounds and polyhydrxy compound
Assignee: Shell USA Inc
•
Filing: 1954-09-14
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Granted: 1963-05-14
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Expires: 1974-09-14
Abstract
No abstract record available.
Inventors
- 👤 Lloyd C Fetterly
- 👤 David O Collamer
- 👤 Curtis W Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:56
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7614; C08G18/7657; C08G18/7678; C08G18/7685; C08G18/81; C08G18/8125
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A POLYMERIC PRODUCT OF REACTION OF (1) A MEMBER OF THE GROUP CONSISTING OF BENZENE, BIPHENYL, AND DIPHENYLMETHANE SUBSTITUTED BY TWO RADICALS OF THE GROUP CONSISTING OF ISOCYANATO AND ISOTHIOCYANATO IN WHICH THE POSITIONS ORTHO TO EACH OF SAID TWO RADICALS ARE EACH SUBSTITUTED BY AN ALKYL RADICAL, WITH (2) A POLYHYDROXY COMPOUND OF THE GROUP CONSISTING OF POLYHYDROXY ALKANES HYDROXY TERMINATED ETHERS, AND HYDROXY TERMINATED ESTERS.
Claim 2
Dependent Claim
67 words
A POLYMERIC PRODUCT OF REACTION OF (1) A MEMBER OF THE GROUP CONSISTING OF BENZENE, BIPHENYL, AND DIPHENYLMETHANE SUBSTITUTED BY TWO RADICALS OF THE GROUP CONSISTING OF ISOCYANATO AND ISOTHIOCYANATO IN WHICH THE POSITIONS ORTHO TO EACH OF SAID TWO RADICALS ARE EACH SUBSTITUTED BY AN ALKYL RADICAL, WITH (2) A POLYHYDROXY COMPOUND OF THE GROUP CONSISTING OF POLYHYDROXY ALKANES HYDROXY TERMINATED ETHERS, AND HYDROXY TERMINATED ESTERS.
References Cited (Backward Citations)
CH141455A
Cited
US2511544A
Cited
US2319057A
Cited
US2333639A
Cited
US2621168A
Cited
US2625561A
Cited
US2625535A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-13 | 1966-11-12 | 1967-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-13 | 1970-11-12 | 1971-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-13 | 1974-11-12 | 1975-05-14 | $7700.00 | Window Closed / Lapsed |