US2303430A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of purified latex and of rubber, gutta percha, balata, and the like
Assignee: Rubber Stichting
•
Filing: 1939-06-26
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Granted: 1942-12-01
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Expires: 1959-06-26
Abstract
No abstract record available.
Inventors
- 👤 Braak Hendrik Roeloff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 01:05
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/02; C08C1/075; C08C1/08; C08C1/04; C08C1/10; Y; Y10; Y10S; Y10S528/00; Y10S528/931; Y10S528/932
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) | 1945-11-30 | 1946-06-01 | 1946-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1949-11-30 | 1950-06-01 | 1950-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1953-11-30 | 1954-06-01 | 1954-12-01 | $7700.00 | Window Closed / Lapsed |