US3097044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for coloring polypropylene
Assignee: Novartis Corp
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Filing: 1960-04-04
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Granted: 1963-07-09
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Expires: 1980-04-04
Abstract
No abstract record available.
Inventors
- 👤 Skeuse Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:31
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/79; D06P3/795; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
THE METHOD OF DYEING POLYPROPYLENE FIBER BY THE SIMULTANEOUS INTERACTION OF DYE, WATER SOLUBLE CHROMIUM SALT, ACID AND FIBER IN AQUEOUS DYE BATH, WHICH COMPRISES CONTACTING SAID FIBER IN SAID BATH WITH A MORDANT DYE IN PRESENCE OF SAID WATER-SOLUBLE CHROMIUM SALT FOR A PERIOD OF FROM ABOUT 15 MINUTES TO ABOUT 90 MINUTES AT A TEMPERATURE OF FROM ABOUT 212* TO ABOUT 250*F., THE RATIO OF SAID DYE TO SAID CHROMIUM SALT RANGING FROM ABOUT 1:1 TO ABOUT 1:2 BY WEIGHT, BASED ON THE DRY WEIGHT OF THE FIBER.
Claim 2
Independent Claim
90 words
THE METHOD OF DYEING POLYPROPYLENE FIBER BY THE SIMULTANEOUS INTERACTION OF DYE, WATER SOLUBLE CHROMIUM SALT, ACID AND FIBER IN AQUEOUS DYE BATH, WHICH COMPRISES CONTACTING SAID FIBER IN SAID BATH WITH A MORDANT DYE IN PRESENCE OF SAID WATER-SOLUBLE CHROMIUM SALT FOR A PERIOD OF FROM ABOUT 15 MINUTES TO ABOUT 90 MINUTES AT A TEMPERATURE OF FROM ABOUT 212* TO ABOUT 250*F., THE RATIO OF SAID DYE TO SAID CHROMIUM SALT RANGING FROM ABOUT 1:1 TO ABOUT 1:2 BY WEIGHT, BASED ON THE DRY WEIGHT OF THE FIBER.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-07-08 | 1967-01-07 | 1967-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-07-08 | 1971-01-07 | 1971-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-07-08 | 1975-01-07 | 1975-07-09 | $7700.00 | Window Closed / Lapsed |