US2537908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Compounded rubber stock
Assignee: PPG Industries Inc
•
Filing: 1946-07-30
•
Granted: 1951-01-09
•
Expires: 1966-07-30
Abstract
No abstract record available.
Inventors
- 👤 Pechukas Alphonse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:11
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K5/00; C08K5/04; C08K5/05; C08K5/053; Y; Y10; Y10S; Y10S524/00; Y10S524/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
A COMPOSITION COMPRISING AN UNVULCANIZED RUBBER OF THE GROUP CONSISTING OF NUTURAL RUBBER AND POLYMERS OF BUTADINE-1,3, ISOPRENE, PIPERYLENE, 2,3-DIMETHYLBUTADINE, AND 2-CHLOROBUTADINE, 30 TO 100% BY WEIGHT OF CALCIUM SILICATE BASED UPON THE WEIGHT OF SAID RUBBER, AND 2 TO 10% OF AN ALCOHOL BASED UPON THE CALCIUM SILICATE IN THE COMPOSITION.
Claim 2
Dependent Claim
52 words
A COMPOSITION COMPRISING AN UNVULCANIZED RUBBER OF THE GROUP CONSISTING OF NUTURAL RUBBER AND POLYMERS OF BUTADINE-1,3, ISOPRENE, PIPERYLENE, 2,3-DIMETHYLBUTADINE, AND 2-CHLOROBUTADINE, 30 TO 100% BY WEIGHT OF CALCIUM SILICATE BASED UPON THE WEIGHT OF SAID RUBBER, AND 2 TO 10% OF AN ALCOHOL BASED UPON THE CALCIUM SILICATE IN THE COMPOSITION.
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) | 1954-01-08 | 1954-07-10 | 1955-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-08 | 1958-07-10 | 1959-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-08 | 1962-07-10 | 1963-01-09 | $7700.00 | Window Closed / Lapsed |