US2816044A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of plastic articles
Assignee: British Resin Products Ltd
•
Filing: 1953-01-21
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Granted: 1957-12-10
•
Expires: 1973-01-21
Abstract
No abstract record available.
Inventors
- 👤 Deutsch Franz Sam
- 👤 Smith Francis Ronald
- 👤 Pratt Harold John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:48
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/18; C08K3/24; C08K3/26; C08K5/00; C08K5/04; C08K5/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PLASTIC COMPOSITION HAVING A PEARLESCENT SURFACE AND BEING SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ESTER AND ALKYL CELLULOSE CONTAINING A MEMBER SELECTED FROM THE GROUP CONSISTING OF BISMUTH OXYSALICYLATE IN AN AMOUNT OF FROM 1 TO 20% BY WEIGHT AND BISMUTH OXYCARBONATE IN AN AMOUNT OF FROM 0.1 TO 10% BY WEIGHT, SAID COMPOSITION BEING FREE FROM ANY ADDED STABILIZER.
Claim 2
Dependent Claim
62 words
A PLASTIC COMPOSITION HAVING A PEARLESCENT SURFACE AND BEING SELECTED FROM THE GROUP CONSISTING OF CELLULOSE ESTER AND ALKYL CELLULOSE CONTAINING A MEMBER SELECTED FROM THE GROUP CONSISTING OF BISMUTH OXYSALICYLATE IN AN AMOUNT OF FROM 1 TO 20% BY WEIGHT AND BISMUTH OXYCARBONATE IN AN AMOUNT OF FROM 0.1 TO 10% BY WEIGHT, SAID COMPOSITION BEING FREE FROM ANY ADDED STABILIZER.
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) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |