US3084140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyhydroxyurethanes
Assignee: Dow Chemical Co
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Filing: 1957-10-31
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Granted: 1963-04-02
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Expires: 1977-10-31
Abstract
No abstract record available.
Inventors
- 👤 Arthur E Gurgiolo
- 👤 Wilbur L Bressler
- 👤 John C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:15
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/64; C08G18/6415; C08G71/00; C08G71/04; C08L; C08L75/00; C09; C09D; C09D175/00; C09D175/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A POLYHYDROXY POLYURETHANE RESIN PRODUCED BY REACTING BY CONTACTING AT ABOUT 30-200*C. AN ALIPHATIC POLYAMINE, WHEREIN AT LEAST TWO AMINO NITROGEN ATOMS BEAR AT LEAST ONE HYDROGEN ATOM EACH, AND ABOUT 1/3 TO 3 MOLAR PROPORTIONS, BASED ON THE AMINE, OF A CARBONATE HAVING THE FORMULA
Claim 2
Dependent Claim
46 words
A POLYHYDROXY POLYURETHANE RESIN PRODUCED BY REACTING BY CONTACTING AT ABOUT 30-200*C. AN ALIPHATIC POLYAMINE, WHEREIN AT LEAST TWO AMINO NITROGEN ATOMS BEAR AT LEAST ONE HYDROGEN ATOM EACH, AND ABOUT 1/3 TO 3 MOLAR PROPORTIONS, BASED ON THE AMINE, OF A CARBONATE HAVING THE FORMULA
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-01 | 1966-10-01 | 1967-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-01 | 1970-10-01 | 1971-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-01 | 1974-10-01 | 1975-04-02 | $7700.00 | Window Closed / Lapsed |