US2560744A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crude purified hevea rubber
Assignee: Uniroyal Inc
•
Filing: 1950-04-13
•
Granted: 1951-07-17
•
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
2026-10-25 19:21
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
31 words
CRUDE NATURAL RUBBER BEING THE RUBBER SOLIDS OF HEVEA LATEX, SAID LATEX HAVING HAD WATER-SOLUBLE NON-RUBBER SERUM CONSTITUENTS REMOVED THEREFROM, AND SAID RUBBER CONTAINING 0.002% TO 0.2% OF ETHYLENEDIAMINE TETRAACETIC ACID.
Claim 2
Dependent Claim
31 words
CRUDE NATURAL RUBBER BEING THE RUBBER SOLIDS OF HEVEA LATEX, SAID LATEX HAVING HAD WATER-SOLUBLE NON-RUBBER SERUM CONSTITUENTS REMOVED THEREFROM, AND SAID RUBBER CONTAINING 0.002% TO 0.2% OF ETHYLENEDIAMINE TETRAACETIC ACID.
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 |