US3269961A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyurethane foam prepared from a halogen containing polyether
Assignee: Olin Corp
•
Filing: 1962-10-30
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Granted: 1966-08-30
•
Expires: 1982-10-30
Abstract
No abstract record available.
Inventors
- 👤 Herman A Bruson
- 👤 James S Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:27
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/02; C08G65/04; C08G65/22; C08G65/223; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5003
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A POLYURETHANE FOAM PREPARED BY THE PROCESS WHICH COMPRISES REACTING TOGETHER (1) A HALOGEN-CONTAINING ADDUCT OBTAINED BY THE PROCESS WHICH COMPRISES REACTING (A) AT LEAST ONE MOLE OF A HALOGEN-CONTAINING EPOXIDE HAVING THE STRUCTURAL FORMULA
Claim 2
Dependent Claim
35 words
A POLYURETHANE FOAM PREPARED BY THE PROCESS WHICH COMPRISES REACTING TOGETHER (1) A HALOGEN-CONTAINING ADDUCT OBTAINED BY THE PROCESS WHICH COMPRISES REACTING (A) AT LEAST ONE MOLE OF A HALOGEN-CONTAINING EPOXIDE HAVING THE STRUCTURAL 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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |