Patent US3372130A successfully refreshed from Google Patents.
US3372130A
Expired / Lapsed
US
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Control of rate of rise of polyurethane foams with phosphoric acid and a tertiary amine
Assignee: Pharmacia and Upjohn Co
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Filing: 1967-03-02
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Granted: 1968-03-05
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Expires: 1987-03-02
Abstract
No abstract record available.
Inventors
- 👤 Chess Samuel
- 👤 Robert G Pilmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 09:30
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/08; C08G18/16; C08G18/18; C08G18/1875; C08G18/089
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2620349A
Cited
US2948691A
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US2692874A
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US2692873A
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GB831301A
Cited
US3201358A
Cited
US3136731A
Cited
US3208959A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-05 | 1971-09-04 | 1972-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-05 | 1975-09-04 | 1976-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-05 | 1979-09-04 | 1980-03-05 | $7700.00 | Window Closed / Lapsed |