US3208813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyestuffs for shaped articles of high molecular polymers and the method of dyeing these polymers to fast yellow color
Assignee: Nitto Boseki Co Ltd
•
Filing: 1963-06-13
•
Granted: 1965-09-28
•
Expires: 1983-06-13
Abstract
No abstract record available.
Inventors
- 👤 Tanaka Ryukichi
- 👤 Teramura Kazuhiro
- 👤 Yokoyama Seuchiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:46
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/22; C08K5/23; C09; C09B; C09B29/00; C09B29/10; C09B29/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A SHAPED ARTICLE CONSISTING OF ONE OF THE GROUP OF POLYOLEFINES, POLYVINYL CHLORIDE, POLYVINYLIDENE CHLORIDE AND POLYSTYRENE DYED WITH AT LEAST ONE MONOAZODYESTUFF OF THE FOLLOWING GENERAL FORMULA
Claim 2
Dependent Claim
28 words
A SHAPED ARTICLE CONSISTING OF ONE OF THE GROUP OF POLYOLEFINES, POLYVINYL CHLORIDE, POLYVINYLIDENE CHLORIDE AND POLYSTYRENE DYED WITH AT LEAST ONE MONOAZODYESTUFF OF THE FOLLOWING GENERAL FORMULA
References Cited (Backward Citations)
US2370537A
Cited
US2532126A
Cited
US2549922A
Cited
US2898178A
Cited
US2989358A
Cited
US2944871A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-27 | 1969-03-29 | 1969-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-27 | 1973-03-29 | 1973-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-27 | 1977-03-29 | 1977-09-28 | $7700.00 | Window Closed / Lapsed |