US3002942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pigmentation of polyesters
Assignee: Onderzoekings Instituut Research
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Filing: 1958-10-06
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Granted: 1961-10-03
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Expires: 1978-10-06
Abstract
No abstract record available.
Inventors
- 👤 Gijsbertus Johannes Zoetbrood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 05:35
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08G; C08G63/00; C08G63/66; C08G63/668; C08G63/672; C08K5/06; C08L; C08L67/00; C08L67/02; C08G63/78; C08G63/82; C08G63/85; Y; Y10; Y10S; Y10S8/00; Y10S8/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
IN A METHOD OF PREPARING PIGMENTED POLYESTERS BY REACTING A GLYCOL OF THE SERIES HO(CH2)NOH WHEREIN N IS AN INTEGER GREATER THAN 1 BUT NOT EXCEEDING 10, AND A COMPOUND OF THE GROUP CONSISTING OF TEREPHTHALIC ACID AND AN ALKYL TEREPHTHALATE OF 1-4 CARBON ATOMS, THE IMPROVEMENT COMPRISING INCORPORATING A PIGMENT IN THE FORM OF A DISPERSION IN THE REACTION MASS IN THE PRESENCE OF A SMALL AMOUNT OF ZINC STEARATE.
Claim 2
Dependent Claim
71 words
IN A METHOD OF PREPARING PIGMENTED POLYESTERS BY REACTING A GLYCOL OF THE SERIES HO(CH2)NOH WHEREIN N IS AN INTEGER GREATER THAN 1 BUT NOT EXCEEDING 10, AND A COMPOUND OF THE GROUP CONSISTING OF TEREPHTHALIC ACID AND AN ALKYL TEREPHTHALATE OF 1-4 CARBON ATOMS, THE IMPROVEMENT COMPRISING INCORPORATING A PIGMENT IN THE FORM OF A DISPERSION IN THE REACTION MASS IN THE PRESENCE OF A SMALL AMOUNT OF ZINC STEARATE.
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) | 1964-10-02 | 1965-04-03 | 1965-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-02 | 1969-04-03 | 1969-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-02 | 1973-04-03 | 1973-10-03 | $7700.00 | Window Closed / Lapsed |