US3177085A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silica sol-masking in galvanizing process
Assignee: ChampionX LLC
•
Filing: 1960-07-27
•
Granted: 1965-04-06
•
Expires: 1980-07-27
Abstract
No abstract record available.
Inventors
- 👤 Nicholas M Adams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:58
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/02; C23C2/024; C23C2/022; C23C2/0224
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
A METHOD FOR GALVANIZING ONLY A PORTION OF A FERROUS METAL OBJECT WHICH COMPRISES THE STEPS OF APPLYING TO THE SURFACES OF THE OBJECT NOT TO BE GALVANIZED, A COATING OF AN AQUEOUS COLLOIDAL SILICA SOL, CONSISTING ESSENTIALLY OF SILICA PARTICLES OF A SIZE LESS THAN 150 MILLIMICRONS AND IN AN AMOUNT OF FROM 1% TO 30% BY WEIGHT SIO2, HEATING THE SURFACE SO TREATED TO A TEMPERATURE SUFFICIENT TO SUBSTANTIALLY DRY THE SOL, AND FORM A THIN FILM OF COLLOIDAL SILICA, AND GALVANIZING THE METAL OBJECT.
Claim 2
Independent Claim
87 words
A METHOD FOR GALVANIZING ONLY A PORTION OF A FERROUS METAL OBJECT WHICH COMPRISES THE STEPS OF APPLYING TO THE SURFACES OF THE OBJECT NOT TO BE GALVANIZED, A COATING OF AN AQUEOUS COLLOIDAL SILICA SOL, CONSISTING ESSENTIALLY OF SILICA PARTICLES OF A SIZE LESS THAN 150 MILLIMICRONS AND IN AN AMOUNT OF FROM 1% TO 30% BY WEIGHT SIO2, HEATING THE SURFACE SO TREATED TO A TEMPERATURE SUFFICIENT TO SUBSTANTIALLY DRY THE SOL, AND FORM A THIN FILM OF COLLOIDAL SILICA, AND GALVANIZING THE METAL OBJECT.
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |