Patent US2427493A successfully refreshed from Google Patents.
US2723259A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vinyl naphthenate polymer
Assignee: Sunoco Inc
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Filing: 1953-01-28
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Granted: 1955-11-08
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Expires: 1973-01-28
Abstract
No abstract record available.
Inventors
- 👤 Jr Stewart S Kurtz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:36
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
AS A NEW COMPOSITION OF MATTER, VINYL NAPHTHENATE POLYMER.
Claim 2
Dependent Claim
9 words
AS A NEW COMPOSITION OF MATTER, VINYL NAPHTHENATE POLYMER.
References Cited (Backward Citations)
US2482606A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |