Metal cleaner
Abstract
Abstract A LIQUID ABRASIVE CLEANER WHICH IS ESSENTIALLY NONACIDIC, IS NOT HARMFUL TO THE HUMAN SKIN, WHICH IS PARTICULARLY USEFUL FOR CLEANING METALLIC SURFACE, IN PARTICULAR STAINLESS STEEL SURFACES, AND WHICH LEAVES A NON-CORROSIVE PROTECTIVE COATING THEREON, WHICH CLEANER IS IN THE FORM OF A RELATIVELY STABLE HOMOGENEOUS AQUEOUS DISPERSION CONSISTING ESSENTIALLY OF, PER 500 PARTS BY WEIGHT OF WATER AND BASED UPON THE TOTAL WEIGHT OF THE COMPOSITION, (A) FROM ABOUT 10-30 PARTS BY WEIGHT OF SOAP FATTY ACID (B) FROM ABOUT 10-30 PARTS BY WEIGHT OF DICARBOXYLIC ACID (C) A WEAK BASE IN AN AMOUNT AT LEAST SUFFICIENT TO NEUTRALIZE SAID ACIDS AND FORM SALTS THEREWITH (D) FROM ABOUT 90-50 PARTS BY WEIGHT OF CALCINED DIATOMACEOUS SILICA OF PREDOMINATELY COLLOIDAL PARTICLE SIZE (E) FROM ABOUT 90-50 PARTS BY WEIGHT OF UNCALCINED DIATOMACEOUS SILICA OF PREDOMINATELY COLLOIDAL PARTICLE SIZE AND (F) FROM ABOUT 20-40 PARTS BY WEIGHT OF A GELLING AGENT, SAID GELLING AGENT BEING PRESENT IN AN AMOUNT SUFFICIENT TO MAINTAIN THE CALCINED AND UNCALCINED DIATOMACEOUS SILICA PARTICLES IN HOMOGENEOUS DISPERSION.
Inventors
- 👤 Gordon C Combe
Bibliographic Details
Claims Analysis
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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) | 1974-11-15 | 1975-05-17 | 1975-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-15 | 1979-05-17 | 1979-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-15 | 1983-05-17 | 1983-11-16 | $7700.00 | Window Closed / Lapsed |