US3134755A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane plastics prepared from the reaction product of an aldehyde and an oxyalkylated aromatic amine
Assignee: Bayer AG
•
Filing: 1958-05-16
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Granted: 1964-05-26
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Expires: 1978-05-16
Abstract
No abstract record available.
Inventors
- 👤 Muller Erwin
- 👤 Bayer Otto
- 👤 Braun Gunther
- 👤 Scheurlen Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:14
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5033; C08G12/00; C08G12/02; C08G12/04; C08G12/06; C08G12/08; C08G18/54; C08G18/546
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
A PROCESS FOR MAKING A POLYURETHANE WHICH COMPRISES: (A) REACTING AN ORGANIC POLYISOCYANATE WITH A POLYHYDROXYL CONDENSATION COMPOUND; (B) SAID POLYHYDROXYL CONDENSATION COMPOUND HAVING BEEN OBTAINED BY A PROCESS WHICH CONSISTS OF MIXING AND REACTING IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST SELECED FROM THE GROUP CONSISTING OF ACID CATALYSTS AND BASIC CATALYSTS, ANS ALDEHYDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
Claim 2
Dependent Claim
67 words
A PROCESS FOR MAKING A POLYURETHANE WHICH COMPRISES: (A) REACTING AN ORGANIC POLYISOCYANATE WITH A POLYHYDROXYL CONDENSATION COMPOUND; (B) SAID POLYHYDROXYL CONDENSATION COMPOUND HAVING BEEN OBTAINED BY A PROCESS WHICH CONSISTS OF MIXING AND REACTING IN THE PRESENCE OF A CATALYTIC AMOUNT OF A CATALYST SELECED FROM THE GROUP CONSISTING OF ACID CATALYSTS AND BASIC CATALYSTS, ANS ALDEHYDE WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF
References Cited (Backward Citations)
US2161322A
Cited
US2511544A
Cited
US2432023A
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US2535380A
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US2843569A
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US2962524A
Cited
US2962455A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-05-26 | 1967-11-25 | 1968-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-26 | 1971-11-25 | 1972-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-26 | 1975-11-25 | 1976-05-26 | $7700.00 | Window Closed / Lapsed |