Patent US4168583A successfully refreshed from Google Patents.
Patent US3834870A successfully refreshed from Google Patents.
US3834870A
Expired / Lapsed
US
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Textile finishing process
Assignee: Hercules LLC
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Filing: 1972-10-31
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Granted: 1974-09-10
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Expires: 1992-10-31
Abstract
Abstract FASTNESS PROPERTIES OF ACID-DYED POLYPROPYLENE YARNS ARE IMPROVED BY APPLYING TO THE SURFACE OF THE YARN, FOLLOWING COMPLETION OF DYEING, A WATER-INSOLUBLE FATTY ACID ESTER.
Inventors
- 👤 C Tucker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 11:03
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/79; D06P3/791; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65125; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/928
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-09 | 1978-03-11 | 1978-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-09 | 1982-03-11 | 1982-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-09 | 1986-03-11 | 1986-09-10 | $7700.00 | Window Closed / Lapsed |