Patent US1652618A successfully refreshed from Google Patents.
US3035002A
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Process comprising milling silica with a polymer containing a plurality of carboxylic acid ester side groups
Assignee: EIDP Inc
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Filing: 1959-02-17
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Granted: 1962-05-15
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Expires: 1979-02-17
Abstract
No abstract record available.
Inventors
- 👤 Brasure Donald Eugene
- 👤 Pruett Richard Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 05:21
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34; C08K3/36; C08F; C08F8/00; C08F8/42; C08G; C08G83/00; C08G83/001; C09; C09D; C09D133/00; C09D133/04; C09D133/06; C08F2800/00; C08F2800/10; C08F2800/20; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS FOR CROSS-LINKING POLYMERIC MATERIALS WHICH COMPRISES MILLING AT A TEMPERATURE OF 90* C.-140* C. A MIXTURE OF A SATURATED THERMOLPLASTIC ORGANIC POLYMER AND 25% TO 75%, BASED ON THE WEIGHT OF THE MIXTURE, OF FINELY-DIVIDED PARTICLES OF SILICA AS THE SOLE CROSS-LINKING AGENT; SAID PARTICLES HAVING THEIR GREATEST DIMENSION WITHIN THE RANGE OF 0.001-0.1 MICRON, HAVING A SPECIFIC SURFACE AREA OF AT LEAST 100 SQUARE METERS PER GRAM AND BEING CHARACTERIZED BY A SURFACE COATED SOLELY WITH HYDROXYL GROUPS; SAID POLYMER CHARACTERIZED BY POLYMERIC CHAINS AND A PLURALITY OF SIDE GROUPS OF THE FORMULA
Claim 2
Dependent Claim
96 words
A PROCESS FOR CROSS-LINKING POLYMERIC MATERIALS WHICH COMPRISES MILLING AT A TEMPERATURE OF 90* C.-140* C. A MIXTURE OF A SATURATED THERMOLPLASTIC ORGANIC POLYMER AND 25% TO 75%, BASED ON THE WEIGHT OF THE MIXTURE, OF FINELY-DIVIDED PARTICLES OF SILICA AS THE SOLE CROSS-LINKING AGENT; SAID PARTICLES HAVING THEIR GREATEST DIMENSION WITHIN THE RANGE OF 0.001-0.1 MICRON, HAVING A SPECIFIC SURFACE AREA OF AT LEAST 100 SQUARE METERS PER GRAM AND BEING CHARACTERIZED BY A SURFACE COATED SOLELY WITH HYDROXYL GROUPS; SAID POLYMER CHARACTERIZED BY POLYMERIC CHAINS AND A PLURALITY OF SIDE GROUPS OF THE 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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |