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Patent US3394091A successfully refreshed from Google Patents.
US3394091A
Expired / Lapsed
US
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Formaldehyde-2-methyl glutaroguanamine reaction product and molding compositions produced therefrom
Assignee: Plastics Manufacturing Co
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Filing: 1965-04-12
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Granted: 1968-07-23
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Expires: 1985-04-12
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
- 👤 Gilbert M Gynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:54
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/30
Claims Analysis
Total Claims: 0
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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) | 1971-07-23 | 1972-01-22 | 1972-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-23 | 1976-01-22 | 1976-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-23 | 1980-01-22 | 1980-07-23 | $7700.00 | Window Closed / Lapsed |