Patent US2540592A successfully refreshed from Google Patents.
US2540592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Plasticized phenolic resin blends
Assignee: Standard Oil Development Co
•
Filing: 1948-09-10
•
Granted: 1951-02-06
•
Expires: 1968-09-10
Abstract
No abstract record available.
Inventors
- 👤 Raymond G Newberg
- 👤 David W Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 20:23
CPC Classifications
C; C08; C08L; C08L9/00; C08L61/00; C08L61/04; C08L61/06; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L45/00; C08L45/02; C08L9/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A COMPOSITION OF MATTER COMPRISING A RUBBER-LIKE COPOLYMER OF 60 TO 80 PERCENT OF A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS AND 40 TO 20 PERCENT OF AN ACRYLIC NITRILE HAVING THE GENERAL FORMULA H2C=CR-CN WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN CHLORINE, METHYL AND ETHYL; A THERMOSETTING CONDENSATION RESINOID OF A PHENOL OF 6 TO 25 CARBON ATOMS AND AN ALDEHYDE OF 1 TO 7 CARBON ATOMS; AND A COPOLYMER OF 40 TO 80 PERCENT OF A STYRENE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
88 words
A COMPOSITION OF MATTER COMPRISING A RUBBER-LIKE COPOLYMER OF 60 TO 80 PERCENT OF A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS AND 40 TO 20 PERCENT OF AN ACRYLIC NITRILE HAVING THE GENERAL FORMULA H2C=CR-CN WHEREIN R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN CHLORINE, METHYL AND ETHYL; A THERMOSETTING CONDENSATION RESINOID OF A PHENOL OF 6 TO 25 CARBON ATOMS AND AN ALDEHYDE OF 1 TO 7 CARBON ATOMS; AND A COPOLYMER OF 40 TO 80 PERCENT OF A STYRENE HAVING THE GENERAL FORMULA
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) | 1954-02-05 | 1954-08-07 | 1955-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-05 | 1958-08-07 | 1959-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-05 | 1962-08-07 | 1963-02-06 | $7700.00 | Window Closed / Lapsed |