Patent US2922565A successfully refreshed from Google Patents.
Patent US2910748A successfully refreshed from Google Patents.
US2910748A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of binders for sand cores
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1957-03-11
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Granted: 1959-11-03
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Expires: 1977-03-11
Abstract
No abstract record available.
Inventors
- 👤 Hammer Glen Porter
- 👤 Steele Clellie Truman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:33
CPC Classifications
B; B22; B22C; B22C1/00; B22C1/16; B22C1/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
A CORE COIL WHICH IS ADAPTED TO BE ADMIXED WITH A COMMINUTED REFRACTORY CORE BODY WHICH COMPRISES A MIXTURE OF 1 PART BY WEIGHT OF A DRYING OIL, 2 PARTS BY WEIGHT OF A POLYMER AND A SOLVENT OF SAID POLYMER, SAID POLYMER BEING PREPARED BY THE FOLLOEING STEPS: (1) PROVIDING A STEAM-CRACKED PETROLEUM FRACTION BOILING BETWEEN 80* AND 350*F.; (2) HEAT SOAKING THE STREAM-CRACKED FRACTION AT 220*-240*F. TO DIMERIZE THE CYCLIC DIENES (3) SEPARATING THE UNDIMERIZED MATERIALS FROM THE DIMERIZED CYCLIC DIENES; ANS (4) POLYMERIZING THE DIMERIZED CYCLIC DIENES WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF CLAY AND H3PO4.
Claim 2
Dependent Claim
102 words
A CORE COIL WHICH IS ADAPTED TO BE ADMIXED WITH A COMMINUTED REFRACTORY CORE BODY WHICH COMPRISES A MIXTURE OF 1 PART BY WEIGHT OF A DRYING OIL, 2 PARTS BY WEIGHT OF A POLYMER AND A SOLVENT OF SAID POLYMER, SAID POLYMER BEING PREPARED BY THE FOLLOEING STEPS: (1) PROVIDING A STEAM-CRACKED PETROLEUM FRACTION BOILING BETWEEN 80* AND 350*F.; (2) HEAT SOAKING THE STREAM-CRACKED FRACTION AT 220*-240*F. TO DIMERIZE THE CYCLIC DIENES (3) SEPARATING THE UNDIMERIZED MATERIALS FROM THE DIMERIZED CYCLIC DIENES; ANS (4) POLYMERIZING THE DIMERIZED CYCLIC DIENES WITH A CATALYST SELECTED FROM THE GROUP CONSISTING OF CLAY AND H3PO4.
References Cited (Backward Citations)
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US2659654A
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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) | 1962-11-02 | 1963-05-04 | 1963-11-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-02 | 1967-05-04 | 1967-11-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-02 | 1971-05-04 | 1971-11-03 | $7700.00 | Window Closed / Lapsed |