Patent US3345309A successfully refreshed from Google Patents.
US3345309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethanes prepared from organic polyisocyanates and a haloaryl alkyl amino alcohol
Assignee: Bayer AG
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Filing: 1964-02-11
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Granted: 1967-10-03
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Expires: 1984-02-11
Abstract
No abstract record available.
Inventors
- 👤 Merten Rudolf
- 👤 Braun Gunther
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:11
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/38; C08G18/3802
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A POLYURETHANE PLASTIC PREPARED BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC JPOLYISOCYANATE WITH A HALOARYL ALKYL AMINO ALCOHOL HAVING THE FORMULA
Claim 2
Dependent Claim
22 words
A POLYURETHANE PLASTIC PREPARED BY A PROCESS WHICH COMPRISES REACTING AN ORGANIC JPOLYISOCYANATE WITH A HALOARYL ALKYL AMINO ALCOHOL 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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |