Patent US1213791A successfully refreshed from Google Patents.
US2977336A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coating composition containing polysiloxane resin and polysiloxane rubber, film coated therewith and process of making
Assignee: EIDP Inc
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Filing: 1955-07-18
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Granted: 1961-03-28
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Expires: 1975-07-18
Abstract
No abstract record available.
Inventors
- 👤 Blatz Philip Strubing
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:06
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; C08J2367/00; C08J2367/02; C08J2483/00; C08J2483/02; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259; Y10T428/31504; Y10T428/31652; Y10T428/31663; Y10T428/31786
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A POLYMERIC, THERMOPLASTIC, DIELECTRIC BASE FILM HAVING AN ADHERENT CONTINUOUS COATING OF A CURED HOMOGENEOUS BLEND COMPRISING 40-75% OF A POLYMERIC, ORGANIC, SILOXANE RESIN HAVING A RATIO OF ORGANIC RADICALS-TOSILICON OF 1.0-1.7:1, 15-40% OF A POLYMERIC, ORGANIC, SILOXANE RUBBER HAVING A RATIO OF ORGANIC RADICALS-TOSILICON OF 1.98-2.0:1 AND 5-20% OF FINELY DIVIDED PARTICLES FROM THE GROUP CONSISTING OF AMORPHOUS SILICA AND ESTERIFIED SUPER-COLLOIDAL SUBSTRATES, SAID SUBSTRATES HAVING A SPECIFIC SURFACE AREA OF AT LEAST 1 METER2/GRAM AND A SURFACE OF SILICA, SAID SILICA COATED WITH OR GROUPS CHEMICALLY BOUND THERETO, R BEING A HYDROCARBON RADICAL OF AT LEAST 2 CARBON ATOMS WHEREIN THE CARBON ATOM ATTACHED TO OXYGEN IS ALSO ATTACHED TO HYDROGEN.
Claim 2
Dependent Claim
113 words
A POLYMERIC, THERMOPLASTIC, DIELECTRIC BASE FILM HAVING AN ADHERENT CONTINUOUS COATING OF A CURED HOMOGENEOUS BLEND COMPRISING 40-75% OF A POLYMERIC, ORGANIC, SILOXANE RESIN HAVING A RATIO OF ORGANIC RADICALS-TOSILICON OF 1.0-1.7:1, 15-40% OF A POLYMERIC, ORGANIC, SILOXANE RUBBER HAVING A RATIO OF ORGANIC RADICALS-TOSILICON OF 1.98-2.0:1 AND 5-20% OF FINELY DIVIDED PARTICLES FROM THE GROUP CONSISTING OF AMORPHOUS SILICA AND ESTERIFIED SUPER-COLLOIDAL SUBSTRATES, SAID SUBSTRATES HAVING A SPECIFIC SURFACE AREA OF AT LEAST 1 METER2/GRAM AND A SURFACE OF SILICA, SAID SILICA COATED WITH OR GROUPS CHEMICALLY BOUND THERETO, R BEING A HYDROCARBON RADICAL OF AT LEAST 2 CARBON ATOMS WHEREIN THE CARBON ATOM ATTACHED TO OXYGEN IS ALSO ATTACHED TO HYDROGEN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-27 | 1964-09-26 | 1965-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-27 | 1968-09-26 | 1969-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-27 | 1972-09-26 | 1973-03-28 | $7700.00 | Window Closed / Lapsed |