US2999768A
Expired / Lapsed
US
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Complex chromic compounds
Assignee: Bayer AG
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Filing: 1958-07-08
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Granted: 1961-09-12
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Expires: 1978-07-08
Abstract
No abstract record available.
Inventors
- 👤 Boresch Carl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:30
CPC Classifications
C; C07; C07F; C07F11/00; C07F11/005; D; D06; D06M; D06M13/00; D06M13/50; D06M13/503; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/2964; Y10T428/2967; Y10T428/2969; Y10T442/00; Y10T442/20; Y10T442/2221
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
44 words
A PROCESS FOR INCREASING THE HYDROPHOBIC PROPERTIES OF A SURFACE WHEREIN THE SURFACE IS CONTACTED WITH A COMPLEX CHORMIC COMPOUND CONTAINING INORGANIC AND ORGANIC ACID RADICALS, IN WHICH THE MOLECULAR RATIO OF CHROMIUM TO THE TOTAL OF THE ORGANIC ACID RADICALS IS BELOW 1:1
References Cited (Backward Citations)
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 |