US3357783A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing and printing polypropylene fibers with monoazo dyestuffs
Assignee: Bayer AG
•
Filing: 1964-04-09
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Granted: 1967-12-12
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Expires: 1984-04-09
Abstract
No abstract record available.
Inventors
- 👤 Wunderlich Hermann
- 👤 Menzel Karl-Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:20
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/79; D06P3/795; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/928; Y10S8/93
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A PROCESS FOR DYEING AND PRINTING OF POLYPROPYLENE FIBERS WHICH COMPRISES TREATING POLYPROPYLENE FIBERS WITH A DYESTUFF WHICH IS FREE OF SULFONIC ACID GROUPS AND OF CARBOXYLIC ACID GROUPS AND HAS THE GENERAL FORMULA:
Claim 2
Dependent Claim
34 words
A PROCESS FOR DYEING AND PRINTING OF POLYPROPYLENE FIBERS WHICH COMPRISES TREATING POLYPROPYLENE FIBERS WITH A DYESTUFF WHICH IS FREE OF SULFONIC ACID GROUPS AND OF CARBOXYLIC ACID GROUPS AND HAS THE GENERAL FORMULA:
References Cited (Backward Citations)
US3167537A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-12-11 | 1971-06-12 | 1971-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-12-11 | 1975-06-12 | 1975-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-12-11 | 1979-06-12 | 1979-12-12 | $7700.00 | Window Closed / Lapsed |