US3627488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion- and erosion-resistant material
Assignee: Raytheon Co
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Filing: 1969-07-07
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Granted: 1971-12-14
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Expires: 1989-07-07
Abstract
Abstract A METALLIC MATERIAL, SUCH AS COPPER, HAVING A DIFFUSED SURFACE WHICH IS HIGHLY RESISTANT TO CORROSION AND EROSION, AND METHOD OF MAKING SAME.
Inventors
- 👤 Kenneth W Dudley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:08
CPC Classifications
H; H01; H01J; H01J23/00; C; C23; C23C; C23C10/00; C23C10/28; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10S428/9335; Y10S428/941; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12882; Y10T428/12903
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |