US3201335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion protection
Assignee: Shell USA Inc
•
Filing: 1962-10-25
•
Granted: 1965-08-17
•
Expires: 1982-10-25
Abstract
No abstract record available.
Inventors
- 👤 Adrian J Macnab
- 👤 Richard S Treseder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 03:44
CPC Classifications
C; C07; C07C; C07C5/00; C07C5/22; C07C5/27; C07C5/2767; C07C5/277; C07C5/2778; C07C5/2786; B; B01; B01J; B01J19/00; B01J19/02; C07C5/2206; C07C5/2226; C07C5/2246; C07C5/2253; C23; C23F; C23F13/00; C23F13/02; C23F13/04; C23F13/06; C23F13/08; C23F13/12; B01J2219/00; B01J2219/02; B01J2219/025; B01J2219/0277; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/10; C07C2527/11; C07C2527/125; C07C2527/126; C07C2527/133
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US476914A
Cited
US1527027A
Cited
US1846765A
Cited
US2444174A
Cited
US2485276A
Cited
GB657392A
Cited
GB825184A
Cited
US2913384A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-16 | 1969-02-15 | 1969-08-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-16 | 1973-02-15 | 1973-08-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-16 | 1977-02-15 | 1977-08-17 | $7700.00 | Window Closed / Lapsed |