Patent US2816286A successfully refreshed from Google Patents.
US2816286A
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Combinations of rubbery materials and dehydrated and heat treated residues obtained in the furfural extractive method in the purification of butadiene
Assignee: Harvel Research Corp
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Filing: 1953-02-25
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Granted: 1957-12-10
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Expires: 1973-02-25
Abstract
No abstract record available.
Inventors
- 👤 Mortimer T Harvey
- 👤 Peter L Rosamilia
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:11
CPC Classifications
C; C08; C08L; C08L21/00; C08L11/00; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L9/00; C08L9/02; C08L9/06; C08L93/00
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
112 words
A COMPOSITION OF MATTER COMPRISING A COMBINATION OF (1) A RUBBERY MATERIAL SELECTED FROM THE GROUP CONSISTING OF RUBBER, RECLAIMED RUBBERM RUBBERY POLYMERS OF CHLOROPRENE, RUBBERY COPOLYMERS OF BUTADIEN AND STYRENE, RUBBERY COPOLYMERS OF BUTADIENE, AND ACRYLONITRILE, RUBBERY HOPOLYMERS OF BATADIENE,RUBBERY POLY ETHYLENE POLYSULPHIDE AND (11) A MATERIAL WHICH IS SUBSTANTIALLU SOLID AND HAVING A SOFTENING POINT (BALL AND RING) IN THE TEMPERATURE RANGE OF ABOUT 130-250* F. AND PRODUCED BY DEHYDRATING AND HEATING A PLANT RESIDUE OBTAINED IN THE FURFURAL EXTRACTIV DISTILLATION METHOD FOR THE PURIFICATION OF BUTADIEN UNTILL SAID MATERIAL IS PRODUCED, THE RATIO BY WEIGHT OF (1) TO (11) BEING 100 PARTS OF (1) TO 3-200 PARS OF (11).
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) | 1960-12-09 | 1961-06-10 | 1961-12-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-09 | 1965-06-10 | 1965-12-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-09 | 1969-06-10 | 1969-12-10 | $7700.00 | Window Closed / Lapsed |