US2978349A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Soil proofing
Assignee: Eastern Products Corp
•
Filing: 1957-07-03
•
Granted: 1961-04-04
•
Expires: 1977-07-03
Abstract
No abstract record available.
Inventors
- 👤 John S Walsh
- 👤 Jr Clare L Milton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:31
CPC Classifications
D; D06; D06M; D06M11/00; D06M11/77; D06M11/79; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24364
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
A METHOD OF TREATING A STRIP OF PAINTED METAL TO IMPART RESISTANCE TO PERMANENT SOILING THERETO AND TO LUBRICATE SAID STRIP PRIOR TO SUBSEQUENT FORMING OPERATIONS WHICH COMPRISES HEATING SAID STRIP TO A TEMPERATURE OF AT LEAST APPROXIMATELY 120*F. AND YET NOT HIGH ENOUGH TO DISCOLOR THE PAINTED SURFACE, APPLYING AN AQUEOUS COLLOIDAL DISPERSION OF SILICA TO SAID STRIP WHILE IN THE HEATED STATE, HEATING SAID WET COATED STRIP TO A SURFACE TEMPERATURE OF ABOVE APPROXIMATELY 250*F. AND YET NOT HIGH ENOUGH TO DISCOLOR THE PAINTED SURFACE, DUSTING TALC ONTO BOTH SURFACES OF SAID HEATED STRIP, AND BUFFING THE SURFACES OF SAID STRIP WHEREBY THE TALC IS RUBBED IN AND THE EXCESS REMOVED.
Claim 2
Independent Claim
113 words
A METHOD OF TREATING A STRIP OF PAINTED METAL TO IMPART RESISTANCE TO PERMANENT SOILING THERETO AND TO LUBRICATE SAID STRIP PRIOR TO SUBSEQUENT FORMING OPERATIONS WHICH COMPRISES HEATING SAID STRIP TO A TEMPERATURE OF AT LEAST APPROXIMATELY 120*F. AND YET NOT HIGH ENOUGH TO DISCOLOR THE PAINTED SURFACE, APPLYING AN AQUEOUS COLLOIDAL DISPERSION OF SILICA TO SAID STRIP WHILE IN THE HEATED STATE, HEATING SAID WET COATED STRIP TO A SURFACE TEMPERATURE OF ABOVE APPROXIMATELY 250*F. AND YET NOT HIGH ENOUGH TO DISCOLOR THE PAINTED SURFACE, DUSTING TALC ONTO BOTH SURFACES OF SAID HEATED STRIP, AND BUFFING THE SURFACES OF SAID STRIP WHEREBY THE TALC IS RUBBED IN AND THE EXCESS REMOVED.
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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) | 1964-04-03 | 1964-10-03 | 1965-04-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-03 | 1968-10-03 | 1969-04-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-03 | 1972-10-03 | 1973-04-04 | $7700.00 | Window Closed / Lapsed |