US2878188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Safety glass cleaning
Assignee: Detrex Corp
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Filing: 1955-02-08
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Granted: 1959-03-17
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Expires: 1975-02-08
Abstract
No abstract record available.
Inventors
- 👤 William A Callahan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:55
CPC Classifications
C; C11; C11D; C11D7/00; C11D7/02; C11D7/04; C11D7/10; C11D7/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
IN A METHOD OF REMOVING ORGANIC MATERIAL FROM THE SURFACE OF UNINSTALLED SAFETY GLASS, SAID SAFETY GLASS CONTAINING A PLASTIC MATERIAL WHICH IS SUBJECT TO ATTACK IF CONTACTED BY ORGANIC OIL AND GREASE SOLVENTS, SAID PLASTIC MATERIAL BEING PARTIALLY EXPOSED ALONG AN EDGEW OF SAID SAFETY GLASS AND SAID SAFETY GLASS HAVING A SHAPE OTHER THAN A FLAT PLANE, THE STEP WHICH COMPRISES SPRAYING AGAINST THE SURFACE OF SAID GLASS AN AQUEOUS ACIDIC SOLUTION OF AN ALKALI METAL DIHYDROGEN PHOSPHATE HAVING A PH OF ABOUT 3-7.
Claim 2
Dependent Claim
86 words
IN A METHOD OF REMOVING ORGANIC MATERIAL FROM THE SURFACE OF UNINSTALLED SAFETY GLASS, SAID SAFETY GLASS CONTAINING A PLASTIC MATERIAL WHICH IS SUBJECT TO ATTACK IF CONTACTED BY ORGANIC OIL AND GREASE SOLVENTS, SAID PLASTIC MATERIAL BEING PARTIALLY EXPOSED ALONG AN EDGEW OF SAID SAFETY GLASS AND SAID SAFETY GLASS HAVING A SHAPE OTHER THAN A FLAT PLANE, THE STEP WHICH COMPRISES SPRAYING AGAINST THE SURFACE OF SAID GLASS AN AQUEOUS ACIDIC SOLUTION OF AN ALKALI METAL DIHYDROGEN PHOSPHATE HAVING A PH OF ABOUT 3-7.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |