Patent US2532201A successfully refreshed from Google Patents.
US2532201A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protectively coated alkali containing solids and method of coating same
Assignee: Mathieson Chemical Corp
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Filing: 1946-08-13
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Granted: 1950-11-28
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Expires: 1966-08-13
Abstract
No abstract record available.
Inventors
- 👤 Owen F Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:09
CPC Classifications
C; C01; C01D; C01D1/00; C01D1/04; C01D1/44
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
88 words
THE PROCESS FOR FORMING A PROTECTIVE COATING ON A SOLID SURFACE CONSISTING ESSENTIALLY OF A CAUSTIC OF A METAL OF THE GROUP CONSISTING OF SODIUM AND POTASSIUM WHICH INCLUDES THE STEPS OF APPLYING AN AROMATIC ALDEHYDE HAVING TGHE ALDEHYDE GROUP ATTACHED DIRECTLY TO THE AROMATIC NUCLEUS WHICH UNDERGOES THE CANNIZZARO REACTION AND WHICH IS SELECTED FROM THE GROUP CONSISTING OF BENZALDEHYDE, HYDROCARBON SUBSTITUTED BENZALDEHYDES, CHLOROBENZALDEHYDES AND NITROGEN SUBSTITUTED BENZALDEHYDES, TO THE SURFACE IN SUFFICIENT AMOUNT TO REACT WITH THE SUPERFICIAL CAUSTIC OF THE SURFACE AND REMOVING UNREACTED MATERIAL.
References Cited (Backward Citations)
US150509A
Cited
US1692996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-27 | 1954-05-29 | 1954-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-27 | 1958-05-29 | 1958-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-27 | 1962-05-29 | 1962-11-28 | $7700.00 | Window Closed / Lapsed |