Patent US2841541A successfully refreshed from Google Patents.
US2841541A
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US
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Chemical composition for chromium plating
Assignee: Diamond Shamrock Corp
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Filing: 1955-10-28
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Granted: 1958-07-01
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Expires: 1975-10-28
Abstract
No abstract record available.
Inventors
- 👤 Robert C Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:04
CPC Classifications
C; C25; C25D; C25D3/00; C25D3/02; C25D3/04; B; B01; B01J; B01J23/00; B01J23/16; B01J23/24; B01J23/26; B01J27/00; B01J27/06; B01J37/00; B01J37/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
44 words
A COMPOSITION OF MATTER COMPRISING THE REACTION PRODUCT OBTAINED BY CHEMICALLY REACTING A TRIVALENT CHROMIUM COMPOUND, SILICON DIOXIDE AND A FLUORINE-CONTAINING COMPOUND, THE PROPORTIONS OF THESE ELEMENTS IN THE REACTION PRODUCT BEING ABOUT 27% CHROMIUM, ABOUT 26% FLUORINE AND ABOUT 4% TO 7% SILICON.
Claim 2
Dependent Claim
44 words
A COMPOSITION OF MATTER COMPRISING THE REACTION PRODUCT OBTAINED BY CHEMICALLY REACTING A TRIVALENT CHROMIUM COMPOUND, SILICON DIOXIDE AND A FLUORINE-CONTAINING COMPOUND, THE PROPORTIONS OF THESE ELEMENTS IN THE REACTION PRODUCT BEING ABOUT 27% CHROMIUM, ABOUT 26% FLUORINE AND ABOUT 4% TO 7% SILICON.
References Cited (Backward Citations)
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |