Patent US3102875A successfully refreshed from Google Patents.
US3102875A
Expired / Lapsed
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Polyurethane reaction product and method for making same
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-08-07
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Granted: 1963-09-03
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Expires: 1973-08-07
Abstract
No abstract record available.
Inventors
- 👤 Herbert L Heiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:26
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/30; C08G18/32; C08G18/3271; C08G18/08; C08G18/0838; C08G18/0842; C08G18/0847; C08G18/0852; C08G18/16; C08G18/18; C08G18/1875; C08G18/22; C08G18/225; C08G18/26; C08G18/3278; C08G18/3281; C08G18/36; C08G18/38; C08G18/3855; C08G18/3876; C08G18/40; C08G18/48; C08G18/4829; C08G18/4833; C08G18/60; C08G18/62; C08G18/6287; C08G18/64; C08G18/6415; C08G18/6446; C08G18/6484; C08G18/67; C08G18/675; C09; C09J; C09J175/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
A PROCESS FOR MAKING A REACTION PRODUCT WHICH COMPRISES REACTING (1) A CONDENSATE OF PROPYLENE OXIDE AND A POLYHYDRIC ALCOHOL HAVING FROM 3 TO 4 HYDROXYL GROUPS AND (2) A MEMBER SELECTED FROM THE GROUP CONSISTING OF AN ORGANIC POLYISOCYANATE AND AN ORGANIC POLYISOTHIOCYANATE, THE AMOUNT OF (2) BEING IN EXCESS OF THAT THEORETICALLY REQUIRED TO REACT WITH THE REACTIVE HYDROGENS OF SAID CONDENSATE.
References Cited (Backward Citations)
US2511544A
Cited
FR875643A
Cited
FR869243A
Cited
US2349756A
Cited
FR890915A
Cited
FR897067A
Cited
US2577281A
Cited
US2621166A
Cited
US2650212A
Cited
US2625531A
Cited
US2625532A
Cited
US2948691A
Cited
US2772245A
Cited
US2625535A
Cited
US2787601A
Cited
US2779689A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-02 | 1967-03-04 | 1967-09-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-02 | 1971-03-04 | 1971-09-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-02 | 1975-03-04 | 1975-09-03 | $7700.00 | Window Closed / Lapsed |