US2555068A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of cyclized rubber
Assignee: Rubber Stichting
•
Filing: 1948-11-09
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Granted: 1951-05-29
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Expires: 1968-11-09
Abstract
No abstract record available.
Inventors
- 👤 Gerardus Johannes Van Veersen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:14
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
62 words
IN THE MANUFACTURE OF CYCLIZED RUBBER, THE PROCESS WHICH COMPRISES ADDING TO A NATURAL RUBBER LATEX HAVING A DRY RUBBER CONTENT OF FROM ABOUT 25 TO 80 PER CENT BY WEIGHT FROM ABOUT 0.15 TO 10 PER CENT OF A NON-IONIC STABILIZING AGENT WHICH DOES NOT LOSE ITS STABILIZING PROPERTIES IN THE PRESENCE OF STRONG SULFURIC ACID AND HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
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Cited
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US2442341A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |