Patent US3337290A successfully refreshed from Google Patents.
US3337290A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin dyeing
Assignee: American Aniline Products Inc
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Filing: 1964-04-28
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Granted: 1967-08-22
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Expires: 1984-04-28
Abstract
No abstract record available.
Inventors
- 👤 Henry W Pons
- 👤 Dressler Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:25
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
23 words
A METHOD OF DYEING POLYVALENT METAL-CONTAINING POLYPROPYLENE COMPRISING APPLYING THERETO IN AN AMOUNT SUFFICIENT TO IMPART COLOR, AN AZO DYE OF THE FORMULA:
Claim 2
Independent Claim
23 words
A METHOD OF DYEING POLYVALENT METAL-CONTAINING POLYPROPYLENE COMPRISING APPLYING THERETO IN AN AMOUNT SUFFICIENT TO IMPART COLOR, AN AZO DYE OF THE FORMULA:
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) | 1970-08-21 | 1971-02-20 | 1971-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-21 | 1975-02-20 | 1975-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-21 | 1979-02-20 | 1979-08-22 | $7700.00 | Window Closed / Lapsed |