US3240842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Curable mixture of particulate polyalkylene ether urethane and particulate polyalkylene ether polyurea urethane
Assignee: Bayer Corp
•
Filing: 1961-08-21
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Granted: 1966-03-15
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Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 James H Saunders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:53
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/08; C08G18/10; C08G18/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A STORAGE STABLE CURABLE MIXTURE OF SOLID POLYURETHANE POLYMERS HAVING A SUBSTANTIALLY STABLE -NCO CONTENT WHICH COMPRISES AS THE SOLE REACTING COMPONENTS SOLID PARTICLES OF A POLYALKYLENE ETHER URETHANE HAVING TERMINAL -NCO GROUPS AND SOLID PARTICLES OF A POLYALKYLENE ETHER POLYUREA URETHANE HAVING TERMINAL ACTIVE HYDROGREN ATOMS.
Claim 2
Dependent Claim
47 words
A STORAGE STABLE CURABLE MIXTURE OF SOLID POLYURETHANE POLYMERS HAVING A SUBSTANTIALLY STABLE -NCO CONTENT WHICH COMPRISES AS THE SOLE REACTING COMPONENTS SOLID PARTICLES OF A POLYALKYLENE ETHER URETHANE HAVING TERMINAL -NCO GROUPS AND SOLID PARTICLES OF A POLYALKYLENE ETHER POLYUREA URETHANE HAVING TERMINAL ACTIVE HYDROGREN ATOMS.
References Cited (Backward Citations)
US2921923A
Cited
US2814606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-14 | 1969-09-13 | 1970-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-14 | 1973-09-13 | 1974-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-14 | 1977-09-13 | 1978-03-15 | $7700.00 | Window Closed / Lapsed |