US2536845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of making same
Assignee: —
•
Filing: —
•
Granted: 1951-01-02
•
Expires: 1968-01-02
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:22
CPC Classifications
C; C08; C08F; C08F242/00; C08F10/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
THE PROCESS OF PREPARING POLYMERIZATION PRODUCTS WHICH CONSISTS OF HEATING TO A TEMPERATURE OF 250 TO 400* C. FROM 5 WEIGHT PERCENT TO AN EQUAL AMOUNT BY WEIGHT OF A FATTY DRYING OIL WITH A MEMBER OF THE GROUP CONSISTING OF THE CYCLIC DIMER OF BUTADIENE-1,3 AND THE CYCLIC DIMER OF PIPERYLENE UNTIL A RESIN IS FORMED.
Claim 2
Dependent Claim
57 words
THE PROCESS OF PREPARING POLYMERIZATION PRODUCTS WHICH CONSISTS OF HEATING TO A TEMPERATURE OF 250 TO 400* C. FROM 5 WEIGHT PERCENT TO AN EQUAL AMOUNT BY WEIGHT OF A FATTY DRYING OIL WITH A MEMBER OF THE GROUP CONSISTING OF THE CYCLIC DIMER OF BUTADIENE-1,3 AND THE CYCLIC DIMER OF PIPERYLENE UNTIL A RESIN IS FORMED.
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) | 1954-01-01 | 1954-07-03 | 1955-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-01 | 1958-07-03 | 1959-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-01 | 1962-07-03 | 1963-01-02 | $7700.00 | Window Closed / Lapsed |