US2535690A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fibrous dielectric compositions
Assignee: General Electric Co
•
Filing: 1947-08-02
•
Granted: 1950-12-26
•
Expires: 1967-08-02
Abstract
No abstract record available.
Inventors
- 👤 Harry F Miller
- 👤 Ralph G Flowers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 10:29
CPC Classifications
H; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/16; Y; Y10; Y10S; Y10S8/00; Y10S8/13
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
36 words
A MATERIAL COMPRISING THE FIBROUS PRODUCT OF REACTION OF LIGNOCELLULOSE PULP WITH ACRYLONITRILE IN AN AQUEOUS ALKALI METAL HYDROXIDE MEDIUM, SAID FIBROUS MATERIAL HAVING A NITROGEN CONTENT OF FROM ABOUT 0.3 PERCENT TO ABOUT 2.8 PERCENT.
Claim 2
Dependent Claim
36 words
A MATERIAL COMPRISING THE FIBROUS PRODUCT OF REACTION OF LIGNOCELLULOSE PULP WITH ACRYLONITRILE IN AN AQUEOUS ALKALI METAL HYDROXIDE MEDIUM, SAID FIBROUS MATERIAL HAVING A NITROGEN CONTENT OF FROM ABOUT 0.3 PERCENT TO ABOUT 2.8 PERCENT.
Claim 3
Dependent Claim
45 words
A DIELECTRIC SHEET MATERIAL COMPRISING THE FIBROUS REACTION PRODUCT OF LIGNOCELLULOSE PULP AND ACRYLONITRILE IN AN AQUEOUS ALKALI METAL HYDROXIDE MEDIUM, SAID FIBROUS MATERIAL HAVING A NITROGEN CONTENT OF FROM ABOUT 0.3 PERCENT TO ABOUT 2.8 PERCENT AND A DIELECTRIC COMPOSITION COMPRISING A HALOGENATED HYDROCARBON
Claim 4
Dependent Claim
45 words
A DIELECTRIC SHEET MATERIAL COMPRISING THE FIBROUS REACTION PRODUCT OF LIGNOCELLULOSE PULP AND ACRYLONITRILE IN AN AQUEOUS ALKALI METAL HYDROXIDE MEDIUM, SAID FIBROUS MATERIAL HAVING A NITROGEN CONTENT OF FROM ABOUT 0.3 PERCENT TO ABOUT 2.8 PERCENT AND A DIELECTRIC COMPOSITION COMPRISING A HALOGENATED HYDROCARBON
References Cited (Backward Citations)
US2075410A
Cited
US2015104A
Cited
US2232041A
Cited
US2212836A
Cited
US2281602A
Cited
US2190018A
Cited
US2360367A
Cited
US2391687A
Cited
US2332048A
Cited
US2332049A
Cited
US2349797A
Cited
US2375847A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-25 | 1954-06-26 | 1954-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-25 | 1958-06-26 | 1958-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-25 | 1962-06-26 | 1962-12-26 | $7700.00 | Window Closed / Lapsed |