US3158435A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing polyolefins
Assignee: Montedison SpA
•
Filing: 1960-12-20
•
Granted: 1964-11-24
•
Expires: 1980-12-20
Abstract
No abstract record available.
Inventors
- 👤 Gaetani Ermanno
- 👤 Maderno Cesano
- 👤 Papa Sisto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:41
CPC Classifications
C; C09; C09B; C09B31/00; C09B31/02; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922; Y10S8/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
A PROCESS FOR THE DIRECT DYEING OF AN OLEFIN POLYMER WHICH COMPRISES CONTACTING SAID POLYMER IN AN AQUEOUS DYE BATH WHICH IS MAINTAINED AT ITS BOILING TEMPERATURE WITH A POLYAZO DYE HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
36 words
A PROCESS FOR THE DIRECT DYEING OF AN OLEFIN POLYMER WHICH COMPRISES CONTACTING SAID POLYMER IN AN AQUEOUS DYE BATH WHICH IS MAINTAINED AT ITS BOILING TEMPERATURE WITH A POLYAZO DYE HAVING THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
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US2782185A
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US3004821A
Cited
US2954371A
Cited
US3037974A
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Cited
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Cited
US2989338A
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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) | 1967-11-24 | 1968-05-25 | 1968-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-24 | 1972-05-25 | 1972-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-24 | 1976-05-25 | 1976-11-24 | $7700.00 | Window Closed / Lapsed |