US2921869A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coated polymeric thermoplastic dielectric film
Assignee: EIDP Inc
•
Filing: 1956-05-22
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Granted: 1960-01-19
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Expires: 1976-05-22
Abstract
No abstract record available.
Inventors
- 👤 Mcbride Richard Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:44
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; C; C08; C08J; C08J7/00; C08J7/04; C08J7/0427; C08J7/043; H01B3/42; Y; Y10; Y10T; Y10T428/00; Y10T428/25; Y10T428/259
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR COATING NON-FIBROUS POLYETHYLENE TEREPHTHALATE FLIM WHICH COMPRISES APPLYING TO SAID FLIM A DISPERSION IN A SOLVENT OF 10-60% SOLIDS, SAID SOLIDS CONSISTING ESSENTIALY FO FROM 95% TO 40% BY WEIGHT OF (A) A CURED RESINOUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) PHENOL-FORMALDEHYDE RESINS, (2) ALKYL RESINS RESULTING FROM THE INTERREACTION OF A POLYBASIC CARBOXYLIC ACID AND A POLYHYDRIC ALCHOL, (3) LONG CHAINS FATTY ACID-MODIFIED ALKYD RESINS, AND(4) THE CONDENSATION PRODUCT OF EPICHLOROHYDRIN AND BIS P,P''-HYDROXYPHENYLDIMETHYLMETHANE AND FROM 5% TO 60% BY WEIGHT OF (B) FINELY DIVIDED PARTICLES FROM THE GROUP CONSISTING OA AMORPHOUS SILICA AND ESTERILS, SAID PARTICLE SIZE BETWEEN 5 MILLIMICRONS AND 5 MICRONS, DRIVING OFF SAID SOLVENT TO DRY THE COATED FLIM, AND CURING THE COATED FLIM.
Claim 2
Dependent Claim
124 words
A PROCESS FOR COATING NON-FIBROUS POLYETHYLENE TEREPHTHALATE FLIM WHICH COMPRISES APPLYING TO SAID FLIM A DISPERSION IN A SOLVENT OF 10-60% SOLIDS, SAID SOLIDS CONSISTING ESSENTIALY FO FROM 95% TO 40% BY WEIGHT OF (A) A CURED RESINOUS COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) PHENOL-FORMALDEHYDE RESINS, (2) ALKYL RESINS RESULTING FROM THE INTERREACTION OF A POLYBASIC CARBOXYLIC ACID AND A POLYHYDRIC ALCHOL, (3) LONG CHAINS FATTY ACID-MODIFIED ALKYD RESINS, AND(4) THE CONDENSATION PRODUCT OF EPICHLOROHYDRIN AND BIS P,P''-HYDROXYPHENYLDIMETHYLMETHANE AND FROM 5% TO 60% BY WEIGHT OF (B) FINELY DIVIDED PARTICLES FROM THE GROUP CONSISTING OA AMORPHOUS SILICA AND ESTERILS, SAID PARTICLE SIZE BETWEEN 5 MILLIMICRONS AND 5 MICRONS, DRIVING OFF SAID SOLVENT TO DRY THE COATED FLIM, AND CURING THE COATED FLIM.
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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) | 1963-01-18 | 1963-07-20 | 1964-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-18 | 1967-07-20 | 1968-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-18 | 1971-07-20 | 1972-01-19 | $7700.00 | Window Closed / Lapsed |