US3669717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating shaped articles of plasticized polyvinyl chloride
Assignee: Ajinomoto Co Inc
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Filing: 1970-09-23
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Granted: 1972-06-13
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Expires: 1990-09-23
Abstract
Abstract THE TENDENCY OF PLASTICIZED PVC SURFACES TO BECOME TACKY BECAUSE OF PLASTICIZER MIGRATION IS REMEDIED BY A COATING ESSENTIALLY CONSISTING OF POLY-$-ALKYL GLUTAMATE HELD TO THE PVC SURFACE BY A PRIMER COATING OF HOMOPOLYMERS OR COPOLYMERS OF PVC HAVING A LOW DEGREE OF POLYMERIZATION (500 OR LESS).
Inventors
- 👤 Akira Akamatsu
- 👤 Kazushi Togo
- 👤 Yoko Kida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:28
CPC Classifications
D; D06; D06N; D06N3/00; D06N3/04; D06N3/06; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J7/046; D06N3/12; D06N3/125; D06N3/126; C08J2327/00; C08J2327/02; C08J2327/04; C08J2327/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-06-13 | 1975-12-13 | 1976-06-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-06-13 | 1979-12-13 | 1980-06-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-06-13 | 1983-12-13 | 1984-06-13 | $7700.00 | Window Closed / Lapsed |