US2545811A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasticized polyvinyl resin
Assignee: Sunoco Inc
•
Filing: 1948-08-25
•
Granted: 1951-03-20
•
Expires: 1968-08-25
Abstract
No abstract record available.
Inventors
- 👤 Stanford J Hetzel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:43
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
30 words
A PROCESS OF PLASTICIZING A POLYVINYL CHLORIDE RESIN WHICH COMPRISES THE STEP OF MILLING TOGETHER SAID RESIN WITH, AS PLASTICIZERS, 1,5-PENTANEDIOL DIESTERS OF ACIDS OBTAINED BY PARTIAL OXIDATION OF KEROSENE.
Claim 2
Dependent Claim
30 words
A PROCESS OF PLASTICIZING A POLYVINYL CHLORIDE RESIN WHICH COMPRISES THE STEP OF MILLING TOGETHER SAID RESIN WITH, AS PLASTICIZERS, 1,5-PENTANEDIOL DIESTERS OF ACIDS OBTAINED BY PARTIAL OXIDATION OF KEROSENE.
References Cited (Backward Citations)
US2339387A
Cited
US2397612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-19 | 1954-09-18 | 1955-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-19 | 1958-09-18 | 1959-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-19 | 1962-09-18 | 1963-03-20 | $7700.00 | Window Closed / Lapsed |