US2999798A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing a wear-resisting surface on a metal element
Assignee: Daimler Benz AG
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Filing: 1955-12-09
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Granted: 1961-09-12
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Expires: 1975-12-09
Abstract
No abstract record available.
Inventors
- 👤 Eitel Max
- 👤 Franz J Eisele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:27
CPC Classifications
C; C25; C25D; C25D7/00; C25D7/10; C25D15/00; C25D15/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
METHOD OF INCREASING THE WATER RESISTANCE OF A METAL ELEMENT WHICH COMPRISES THE STEPS OF APPLYING A LAYER CONSISTING ESSENTIALLY OF METAL OF THE METAL SULFIDE ON THE SURFACE OF THE ELEMENT, SAID LAYER BEING APPLIED BY SIMULTANEOUSLY ELECTROPLATING SAID METAL AND ELECTROPHORETICALLY DEPOSITING SAID SULPHIDE FROM A BATH CONSISTING ESSENTIALLY OF A SALT OF SAID METAL IN SOLUTION AND OF SAID SULFIDE IN SUSPENSION.
Claim 2
Dependent Claim
65 words
METHOD OF INCREASING THE WATER RESISTANCE OF A METAL ELEMENT WHICH COMPRISES THE STEPS OF APPLYING A LAYER CONSISTING ESSENTIALLY OF METAL OF THE METAL SULFIDE ON THE SURFACE OF THE ELEMENT, SAID LAYER BEING APPLIED BY SIMULTANEOUSLY ELECTROPLATING SAID METAL AND ELECTROPHORETICALLY DEPOSITING SAID SULPHIDE FROM A BATH CONSISTING ESSENTIALLY OF A SALT OF SAID METAL IN SOLUTION AND OF SAID SULFIDE IN SUSPENSION.
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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) | 1964-09-11 | 1965-03-13 | 1965-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-11 | 1969-03-13 | 1969-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-11 | 1973-03-13 | 1973-09-12 | $7700.00 | Window Closed / Lapsed |