US3181963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Alkali metal borate masking in galvanizing process
Assignee: Wheeling Steel Corp
•
Filing: 1960-11-08
•
Granted: 1965-05-04
•
Expires: 1980-11-08
Abstract
No abstract record available.
Inventors
- 👤 Nelson E Cook
- 👤 Samuel L Norteman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:26
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/003; C23C2/0034; C23C2/00342; C23C2/00344; C23C2/0035; C23C2/0038; C23C2/02; C23C2/022; C23C2/0224; C23C2/024
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A METHOD OF APPLYING A PROTECTIVE METAL COATING TO A PORTION ONLY OF A FERROUS METAL ARTICLE WHILE MAINTAINING THE REMAINDER THEREOF SUBSTANTIALLY FREE FROM OXIDE, OBVIATING A HIGH TEMPERATURE OXIDE-REMOVING HEAT TREATMENT, COMPRISING COATING WITH A SOLUTION OF AN ALKALI METAL BORATE THE PORTION OF THE ARTICLE WHICH IS NOT TO BE METAL-COATED AND DIPPING THE ARTICLE IN MOLTEN COATING METAL WHEREBY TO METAL-COAT THE PORTION OF THE ARTICLE WHICH IS NOT COATED WITH THE ALKALI METAL BORATE WHILE THE PORTION COATED WITH THE ALKALI METAL BORATE REMAINS UNCOATED WITH THE COATING METAL AND SUBSTANTIALLY FREE FROM OXIDE AND LIMITING THE TMEPERATURE OR THE ARTICLE AND THE BATH DURING SUCH TREATMENT TO A TEMPERATURE
Claim 2
Independent Claim
115 words
A METHOD OF APPLYING A PROTECTIVE METAL COATING TO A PORTION ONLY OF A FERROUS METAL ARTICLE WHILE MAINTAINING THE REMAINDER THEREOF SUBSTANTIALLY FREE FROM OXIDE, OBVIATING A HIGH TEMPERATURE OXIDE-REMOVING HEAT TREATMENT, COMPRISING COATING WITH A SOLUTION OF AN ALKALI METAL BORATE THE PORTION OF THE ARTICLE WHICH IS NOT TO BE METAL-COATED AND DIPPING THE ARTICLE IN MOLTEN COATING METAL WHEREBY TO METAL-COAT THE PORTION OF THE ARTICLE WHICH IS NOT COATED WITH THE ALKALI METAL BORATE WHILE THE PORTION COATED WITH THE ALKALI METAL BORATE REMAINS UNCOATED WITH THE COATING METAL AND SUBSTANTIALLY FREE FROM OXIDE AND LIMITING THE TMEPERATURE OR THE ARTICLE AND THE BATH DURING SUCH TREATMENT TO A TEMPERATURE
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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) | 1968-05-03 | 1968-11-02 | 1969-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-03 | 1972-11-02 | 1973-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-03 | 1976-11-02 | 1977-05-04 | $7700.00 | Window Closed / Lapsed |