US3478099A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing methylene-diamilines
Assignee: Kaiser Aluminum and Chemical Corp
•
Filing: 1966-09-09
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Granted: 1969-11-11
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Expires: 1986-09-09
Abstract
No abstract record available.
Inventors
- 👤 Richard J Ross
- 👤 George M Fohlen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:23
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08G; C08G18/00; C08G18/06; C08G18/70; C08G18/72; C08G18/74; C08G18/76; C08G18/7657; C08G18/7664; C08K5/13; C08K5/134; C08K5/1345
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3260751A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-10 | 1973-05-12 | 1973-11-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-10 | 1977-05-12 | 1977-11-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-10 | 1981-05-12 | 1981-11-11 | $7700.00 | Window Closed / Lapsed |