US2560743A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preservation of latex
Assignee: Uniroyal Inc
•
Filing: 1950-04-13
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Granted: 1951-07-17
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Expires: 1970-04-13
Abstract
No abstract record available.
Inventors
- 👤 Chester E Rhines
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 23:21
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/16; C08K5/17; C08K5/175; Y; Y10; Y10S; Y10S524/00; Y10S524/925; Y10S524/926; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
59 words
DESLUDGED HEVEA RUBBER LATEX PRESERVED WITH A SMALL AMOUNT OF TETRAALKALI SALT OF ETHYLENEDIAMINE TETRAACETIC ACID AND 0.2% TO 0.5% OF AMMONIA BASED ON THE LATEX, THE AMOUNT OF TETRAALKALI SALT OF ETHYLENE DIAMINE TETRAACETIC ACID BEING LESS THAN THE AMOUNT OF AMMONIA, AND THE AMMONIA BEING IN AMOUNT LESS THAN THAT WHICH OF ITSELF WOULD PRESERVE THE LATEX.
Claim 2
Dependent Claim
59 words
DESLUDGED HEVEA RUBBER LATEX PRESERVED WITH A SMALL AMOUNT OF TETRAALKALI SALT OF ETHYLENEDIAMINE TETRAACETIC ACID AND 0.2% TO 0.5% OF AMMONIA BASED ON THE LATEX, THE AMOUNT OF TETRAALKALI SALT OF ETHYLENE DIAMINE TETRAACETIC ACID BEING LESS THAN THE AMOUNT OF AMMONIA, AND THE AMMONIA BEING IN AMOUNT LESS THAN THAT WHICH OF ITSELF WOULD PRESERVE THE LATEX.
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) | 1954-07-16 | 1955-01-15 | 1955-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-07-16 | 1959-01-15 | 1959-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-07-16 | 1963-01-15 | 1963-07-17 | $7700.00 | Window Closed / Lapsed |