US3235322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing of polyolefin fibers in fast colours
Assignee: Nitto Boseki Co Ltd
•
Filing: 1963-07-30
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Granted: 1966-02-15
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Expires: 1983-07-30
Abstract
No abstract record available.
Inventors
- 👤 Tanaka Ryukichi
- 👤 Teramura Kazuhiro
- 👤 Yokoyama Seichiro
- 👤 Miyamoto Keizo
- 👤 Itoh Shinpei
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:22
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/26; C09B1/32; D; D06; D06P; D06P3/00; D06P3/79; D06P3/794; Y; Y10; Y10S; Y10S8/00; Y10S8/907; Y10S8/913; Y10S8/914; Y10S8/92; Y10S8/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
A METHOD OF DYEING POLYOLEFIN FIBER WHICH COMPRISES TREATING THE SAME WITH A HYDROPHOBIC ANTHRAQUINONE DYE CONTAINING A HYDROXYPHENYLAMINO RADICAL IN ALPHA POSITION AND AN ALKYL RADICAL HAVING MORE THAN THREE CARBON ATOMS IN BETA POSITION ON THE ANTHRAQUINONE NUCLEUS.
Claim 2
Independent Claim
40 words
A METHOD OF DYEING POLYOLEFIN FIBER WHICH COMPRISES TREATING THE SAME WITH A HYDROPHOBIC ANTHRAQUINONE DYE CONTAINING A HYDROXYPHENYLAMINO RADICAL IN ALPHA POSITION AND AN ALKYL RADICAL HAVING MORE THAN THREE CARBON ATOMS IN BETA POSITION ON THE ANTHRAQUINONE NUCLEUS.
References Cited (Backward Citations)
CA645540A
Cited
US1868202A
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US2258551A
Cited
US2487045A
Cited
US2605269A
Cited
GB809495A
Cited
GB838687A
Cited
US3097044A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |