Patent US3235322A successfully refreshed from Google Patents.
US3235322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing of polyolefin fibers in fast colours
Assignee: Nitto Boseki Co Ltd
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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
2026-10-29 23:45
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
Cited
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 |