US3280052A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyamides stabilized against discoloration from carbon disulfide by the addition of copper stearate and thioacetoamides
Assignee: Individual
•
Filing: 1962-10-09
•
Granted: 1966-10-18
•
Expires: 1982-10-09
Abstract
No abstract record available.
Inventors
- 👤 Jun Watanabe
- 👤 Arakawa Soji
- 👤 Kyo Kayomon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:53
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/04; C08K5/09; C08K5/098; C08K5/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2630421A
Cited
US2790734A
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US2864803A
Cited
US2878214A
Cited
FR1220968A
Cited
GB890437A
Cited
US3113120A
Cited
GB945186A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |