Patent US2611036A successfully refreshed from Google Patents.
Patent US2876133A successfully refreshed from Google Patents.
US2876133A
Expired / Lapsed
US
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Process for preparing organophilic particulate solids by polymerizing ethylenically unsaturated monomers upon the surface of organophobic particulate solids
Assignee: EIDP Inc
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Filing: 1954-11-15
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Granted: 1959-03-03
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Expires: 1974-11-15
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Iler
- 👤 Robert D Lipscomb
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:50
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/34; C08F292/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
PROCESS FOR PREPARING ORGANOPHILIC PARTICULATE SOLIDS WHICH COMPRISES PASSING VAPORS OF AT LEAST MONOMER INTO POLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER INTO CONTACT WITH DEGASSED ORGANOPHOBIC PARTICULATE SOLIDS COATED WITH A FREE RADICAL GENERATING, ADDITION-POLYMERIZATION INITIATOR AND POLYMERIZING THE VAPORIZED ETHYLENICALLY UNSATURATED MONOMER ON THE SURFACES OF SAID DEGASSED INITIATOR-COATED PARTICULATE SOLIDS, AND OBTAINING AS THE RESULTING PRODUCT ORGANOPHILIC PARTICULATE SOLIDS COATED WITH THE POLYMERIZED ETHYLENICALLY UNSATURATED MONOMER.
Claim 2
Dependent Claim
66 words
PROCESS FOR PREPARING ORGANOPHILIC PARTICULATE SOLIDS WHICH COMPRISES PASSING VAPORS OF AT LEAST MONOMER INTO POLYMERIZABLE ETHYLENICALLY UNSATURATED MONOMER INTO CONTACT WITH DEGASSED ORGANOPHOBIC PARTICULATE SOLIDS COATED WITH A FREE RADICAL GENERATING, ADDITION-POLYMERIZATION INITIATOR AND POLYMERIZING THE VAPORIZED ETHYLENICALLY UNSATURATED MONOMER ON THE SURFACES OF SAID DEGASSED INITIATOR-COATED PARTICULATE SOLIDS, AND OBTAINING AS THE RESULTING PRODUCT ORGANOPHILIC PARTICULATE SOLIDS COATED WITH THE POLYMERIZED ETHYLENICALLY UNSATURATED MONOMER.
References Cited (Backward Citations)
US2589705A
Cited
US2562182A
Cited
US2662034A
Cited
US2728740A
Cited
US2728732A
Cited
US2749248A
Cited
US2657149A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |