Patent US3173876A successfully refreshed from Google Patents.
US3173876A
Expired / Lapsed
US
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Cleaning methods and compositions
Assignee: Individual
•
Filing: 1960-05-27
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Granted: 1965-03-16
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Expires: 1980-05-27
Abstract
No abstract record available.
Inventors
- 👤 John C Zobrist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:00
CPC Classifications
C; C11; C11D; C11D3/00; C11D3/16; C11D3/26; C11D3/30
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
60 words
THE METHOD FOR CLEANING REFLECTIVE VITREOUS SURFACES WHICH COMPRISES WIPING ONTO SAID SURFACES AN AQUEOUS SOLUTION CONSISTING ESSENTIALLY OF FROM 0.2% TO 12.0% BY WEIGHT ETHYLENEDIAMINE AND FROM 0.2% TO ABOUT 5.0% BY WEIGHT OF A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM BORATE, TRISODIUM PHOSPHATE, SODIUM HEXAMETAPHOSPHATE AND SODIUM TRIPOLYPHOSPHATE, AND THEN WIPING SAID SOLUTION FROM SAID SURFACES.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |