US3471359A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Partially cross-linked polyethylenimine anchoring agent and laminate therefor
Assignee: Chemirad Corp
•
Filing: 1965-08-02
•
Granted: 1969-10-07
•
Expires: 1985-08-02
Abstract
No abstract record available.
Inventors
- 👤 Albert Goldstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:57
CPC Classifications
B; B32; B32B; B32B27/00; C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31855
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2828237A
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US3291775A
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US3140196A
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US3332841A
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US3270005A
Cited
US3230135A
Cited
US3354103A
Cited
US3290416A
Cited
US3325346A
Cited
US3264368A
Cited
US3373194A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-10-06 | 1973-04-07 | 1973-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-10-06 | 1977-04-07 | 1977-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-10-06 | 1981-04-07 | 1981-10-07 | $7700.00 | Window Closed / Lapsed |