US3232694A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaped articles of polyolefin-fusible cellulose ether blends dyed with disperse dyes
Assignee: Celanese Canada Inc
•
Filing: 1962-02-23
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Granted: 1966-02-01
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Expires: 1982-02-23
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Grenier
- 👤 Bruce A Fairbairn
- 👤 Holmes Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:56
CPC Classifications
C; C08; C08L; C08L1/00; C08L1/08; C08L1/26; C08L23/00; C08L23/02; Y; Y10; Y10S; Y10S8/00; Y10S8/09; Y10S8/92; Y10S8/928
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
80 words
A METHOD OF DYEING A POLYOLEFIN SELECTED FROM THE GROUP CONSISTING OF POLYETHLENE AND POLYPROPYLENE, COMPRISING, FORMING A SOLUTION IN SAID POLYOLEFIN OF A CONDITIONING AGENT SELECTED FROM THE GROUP CONSISTING OF FUSTIBLE CELLULOSE ETHERS HAVING A MELTING POINT WITHIN THE RANGE FROM ABOUT 140*C. TO ABOUT 240*C. AND AN INTRINSIC VISCOSITY IN SOLVENT SOLUTION WITHIN THE RANGE FROM 0.4 TO 3.5 DECILITERS PER GRAM, AND SUBSEQUENTLY SHAPING SAID SOLUTION TO FORM A SHAPED MATERIAL, AND DYEING SAID SHAPED MATERIAL.
References Cited (Backward Citations)
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Cited
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US2868741A
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Cited
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |