US3475771A
Expired / Lapsed
US
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Treatment of synthetic polyamide materials with a mixture of halogenated alkanes and halogenated monocarboxylic acids
Assignee: Celanese Corp
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Filing: 1965-06-28
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Granted: 1969-11-04
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Richard G Quynn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:20
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/6515; D06P1/65156; D06P1/653; D06P3/00; D06P3/02; D06P3/04; D06P3/24; D06P3/241; D06P3/26; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924; Y10S8/925
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) | 1972-11-03 | 1973-05-05 | 1973-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-03 | 1977-05-05 | 1977-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-03 | 1981-05-05 | 1981-11-04 | $7700.00 | Window Closed / Lapsed |