US2874953A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lining for titanium-contacting apparatus
Assignee: Dow Chemical Co
•
Filing: 1956-08-20
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Granted: 1959-02-24
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Expires: 1976-08-20
Abstract
No abstract record available.
Inventors
- 👤 Jack A Rogers
- 👤 Paul R Juckniess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:27
CPC Classifications
F; F27; F27B; F27B14/00; F27B14/08; F27B14/10; F27B2014/104; Y; Y10; Y10S; Y10S266/00; Y10S266/905
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE PROCESS OF PREVENTING TITANIUM SPONGE FORMED DURING THE PRODUCTION THEROF FROM ADHERING TO THE WALL OF A VESSEL CONTAINING IT, COMPOSED OF A MATERIAL SELECTES FROM THE CLASS CONSISTING OF GRAOHITE AND CARBON, WHICH COMPRISES BONDING TO THE INTERIOR OF SAID WALL A LINING FORMED BY CONDENSING A CONDENSATION MIXTURE OF PHENOL AND FORMALDENHYDE TO FORM A STAGE B RESIN, ADMIXTING THEREWITH A HARDENING AGENT SELECTED FROM THE CLASS CONSISTING OF DICHLOROACETIC ACID, TRICHLOROACETIC ACID, AND BENZENE SULFONLY CHLORIDE IN SUFFICENT AMOUNT TO ACCERLERATE THE RATE OF THE THERMOSETTING MIXTURE AFTER ITS
Claim 2
Dependent Claim
93 words
THE PROCESS OF PREVENTING TITANIUM SPONGE FORMED DURING THE PRODUCTION THEROF FROM ADHERING TO THE WALL OF A VESSEL CONTAINING IT, COMPOSED OF A MATERIAL SELECTES FROM THE CLASS CONSISTING OF GRAOHITE AND CARBON, WHICH COMPRISES BONDING TO THE INTERIOR OF SAID WALL A LINING FORMED BY CONDENSING A CONDENSATION MIXTURE OF PHENOL AND FORMALDENHYDE TO FORM A STAGE B RESIN, ADMIXTING THEREWITH A HARDENING AGENT SELECTED FROM THE CLASS CONSISTING OF DICHLOROACETIC ACID, TRICHLOROACETIC ACID, AND BENZENE SULFONLY CHLORIDE IN SUFFICENT AMOUNT TO ACCERLERATE THE RATE OF THE THERMOSETTING MIXTURE AFTER ITS
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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) | 1962-02-23 | 1962-08-25 | 1963-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-23 | 1966-08-25 | 1967-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-23 | 1970-08-25 | 1971-02-24 | $7700.00 | Window Closed / Lapsed |