Patent US2628203A successfully refreshed from Google Patents.
US2628203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Solutions of rubbery polymers from particles of uniform diameter
Assignee: Standard Oil Development Co
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Filing: 1949-09-09
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Granted: 1953-02-10
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Expires: 1969-09-09
Abstract
No abstract record available.
Inventors
- 👤 Carll F Van Gilder
- 👤 William C Harney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:14
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR PREPARING SOLUTION OF HIGH MOLECULAR WEIGHT RUBBERY POLYMERS IN WAX WHICH COMPRISES AGITATING WITH THE WAX, AT A TEMPERATURE ABOVE THE MELTING POINT OF THE WAX, POLYMER PARTICLES SELECTED FROM THE GROUP OF RUBBERY POLYMERS CONSISTING OF NATURAL RUBBER, THE COPOLYMER OF BUTADIENE AND STYRENE, THE COPOLYMER OF BUTADIENE AND ACRYLONITRILE, POLYISOBUTYLENE, POLYETHYLENE, AND THE COPOLYMER OF ISOBUTYLENE AND A DIOLEFIN SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND ISOPRENE, SAID POLYMER PARTICLES BEING OF UNIFORM SIZE OF NOT OVER 1/4 INCH DIAMETER.
Claim 2
Dependent Claim
86 words
A PROCESS FOR PREPARING SOLUTION OF HIGH MOLECULAR WEIGHT RUBBERY POLYMERS IN WAX WHICH COMPRISES AGITATING WITH THE WAX, AT A TEMPERATURE ABOVE THE MELTING POINT OF THE WAX, POLYMER PARTICLES SELECTED FROM THE GROUP OF RUBBERY POLYMERS CONSISTING OF NATURAL RUBBER, THE COPOLYMER OF BUTADIENE AND STYRENE, THE COPOLYMER OF BUTADIENE AND ACRYLONITRILE, POLYISOBUTYLENE, POLYETHYLENE, AND THE COPOLYMER OF ISOBUTYLENE AND A DIOLEFIN SELECTED FROM THE GROUP CONSISTING OF BUTADIENE AND ISOPRENE, SAID POLYMER PARTICLES BEING OF UNIFORM SIZE OF NOT OVER 1/4 INCH DIAMETER.
References Cited (Backward Citations)
US2227516A
Cited
US2404713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |