US3169043A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromyl acetate assisted poly-propylene dyeing
Assignee: IFP Energies nouvelles
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Filing: 1962-05-16
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Granted: 1965-02-09
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Expires: 1982-05-16
Abstract
No abstract record available.
Inventors
- 👤 Baumgartner Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:03
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/653; D06P1/6533; D06P3/00; D06P3/79; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A PROCESS FOR DYEING NORMALLY SOLID POLYPROPYLENE, COMPRISING THE SUCCESSIVE STEPS OF (A) CONTACTING SAID POLYPROPYLENE WITH CHROMYL ACETATE AND (B) CONTACTING THE RESULTING POLYPROPYLENE WITH A DYESTUFF, SAID STEPS BEING CARRIED OUT AT A TEMPERATURE LOWER THAN THE DECOMPOSITION TEMPERATURE OF SAID POLYPROPYLENE.
Claim 2
Dependent Claim
44 words
A PROCESS FOR DYEING NORMALLY SOLID POLYPROPYLENE, COMPRISING THE SUCCESSIVE STEPS OF (A) CONTACTING SAID POLYPROPYLENE WITH CHROMYL ACETATE AND (B) CONTACTING THE RESULTING POLYPROPYLENE WITH A DYESTUFF, SAID STEPS BEING CARRIED OUT AT A TEMPERATURE LOWER THAN THE DECOMPOSITION TEMPERATURE OF SAID POLYPROPYLENE.
References Cited (Backward Citations)
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Cited
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US2224927A
Cited
US2886471A
Cited
US2984634A
Cited
US2984653A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-09 | 1968-08-10 | 1969-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-09 | 1972-08-10 | 1973-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-09 | 1976-08-10 | 1977-02-09 | $7700.00 | Window Closed / Lapsed |