Patent US3450653A successfully refreshed from Google Patents.
US3450653A
Expired / Lapsed
US
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Polyurethane elastomeric sealants
Assignee: Pharmacia and Upjohn Co
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Filing: 1965-12-10
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Granted: 1969-06-17
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Expires: 1985-12-10
Abstract
No abstract record available.
Inventors
- 👤 Thomas R Mcclellan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:19
CPC Classifications
C; C08; C08G; C08G18/00; C08G18/06; C08G18/28; C08G18/40; C08G18/48; C08G18/50; C08G18/5021; C08G18/5033; C08G18/08; C08G18/16; C08G18/161; C08G18/163; C08G18/22; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7657; C08G18/7664; C08G2190/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3201136A
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US3264268A
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US3245924A
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US3277173A
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US3294713A
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BE660652A
Cited
GB1038266A
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US3391101A
Cited
US3378497A
Cited
US3394165A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-16 | 1972-12-16 | 1973-06-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-16 | 1976-12-16 | 1977-06-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-16 | 1980-12-16 | 1981-06-17 | $7700.00 | Window Closed / Lapsed |