US3260702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Decolorized and stabilized organic polyisocyanate compositions
Assignee: Hodogaya Chemical Co Ltd
•
Filing: 1963-06-04
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Granted: 1966-07-12
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Expires: 1983-06-04
Abstract
No abstract record available.
Inventors
- 👤 Murakami Tomohisa
- 👤 Morisaki Shinichi
- 👤 Huro Koshiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:41
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/70; C07; C07D; C07D203/00; C07D203/04; C07D203/06; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/553; C07F9/564; C08K; C08K5/00; C08K5/0008; C08K5/005
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
41 words
A DECOLORIZED AND STABILIZED ORGANIC POLYISOCYANATE COMPOSITION WHICH COMPRISES AN ORGANIC POLYISOCYANATE AND 0.001 TO 1% BY WEIGHT, BASED ON THE WEIGHT OF THE ORGANIC POLYISOCYANATE, OF A MATERIAL SELECTED FROM THE GROUP CONSISTIN OF COMPOUNDS HAVING THE GENERAL FORMULAS OF
Claim 2
Dependent Claim
41 words
A DECOLORIZED AND STABILIZED ORGANIC POLYISOCYANATE COMPOSITION WHICH COMPRISES AN ORGANIC POLYISOCYANATE AND 0.001 TO 1% BY WEIGHT, BASED ON THE WEIGHT OF THE ORGANIC POLYISOCYANATE, OF A MATERIAL SELECTED FROM THE GROUP CONSISTIN OF COMPOUNDS HAVING THE GENERAL FORMULAS OF
Claim 3
Dependent Claim
67 words
IN A METHOD FOR SYNTHESIZING A POLYURETHANE COMPOUND FROM AN ORGANIC POLYISOCYANATE AND A COMPOUND HAVING A PLURALITY OF HYDROXYL GROUPS, AN IMPROVEMENT FOR THE PRODUCTION OF A LESS COLORED POLYURETHANE COMPOUND CHARACTERIZED BY ADDING TO THE ORGANIC POLYISOCYANATE 0.001 TO 1% BY WEIGHT, BASED ON THE WEIGHT OF THE ORGANIC POLYISOCYANATE, OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE GENERAL FORMULAS OF
Claim 4
Dependent Claim
67 words
IN A METHOD FOR SYNTHESIZING A POLYURETHANE COMPOUND FROM AN ORGANIC POLYISOCYANATE AND A COMPOUND HAVING A PLURALITY OF HYDROXYL GROUPS, AN IMPROVEMENT FOR THE PRODUCTION OF A LESS COLORED POLYURETHANE COMPOUND CHARACTERIZED BY ADDING TO THE ORGANIC POLYISOCYANATE 0.001 TO 1% BY WEIGHT, BASED ON THE WEIGHT OF THE ORGANIC POLYISOCYANATE, OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS HAVING THE GENERAL FORMULAS OF
References Cited (Backward Citations)
US1973676A
Cited
US2302288A
Cited
US2686772A
Cited
US3006912A
Cited
US2885420A
Cited
US3165509A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |