US3157457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing polypropylene
Assignee: Onderzoekings Instituut Research
•
Filing: 1962-04-23
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Granted: 1964-11-17
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Expires: 1982-04-23
Abstract
No abstract record available.
Inventors
- 👤 Albertus G Lutgerhorst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:40
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06P1/65118; Y; Y10; Y10S; Y10S8/00; Y10S8/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
IN A METHOD FOR DYEING SHAPED ARTICLES OF POLYPROPYLENE WITH DISPERSE DYES IN THE PRESENCE OF AN AROMATIC COMPOUND AS CARRIER, THE STEPS OF EMPLYING AS CARRIER AN ALKYL PHENOL THE ALKYL GROUP OF WHICH CONTAINS FROM 6 TO 15 CARBON ATOMS.
Claim 2
Dependent Claim
42 words
IN A METHOD FOR DYEING SHAPED ARTICLES OF POLYPROPYLENE WITH DISPERSE DYES IN THE PRESENCE OF AN AROMATIC COMPOUND AS CARRIER, THE STEPS OF EMPLYING AS CARRIER AN ALKYL PHENOL THE ALKYL GROUP OF WHICH CONTAINS FROM 6 TO 15 CARBON ATOMS.
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |