US2995603A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion prevention agent
Assignee: Baker Petrolite LLC
•
Filing: 1957-08-20
•
Granted: 1961-08-08
•
Expires: 1977-08-20
Abstract
No abstract record available.
Inventors
- 👤 Hutchison Charles Bryce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:18
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145; Y; Y10; Y10S; Y10S507/00; Y10S507/939; Y10S516/00; Y10S516/01; Y10S516/07
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
27 words
THE SOLUBLE BASIC REACTION PRODUCT OBTAINED BY HEATING AT AN ELEVATED TEMPERATURE UP TO ABOUT 280*C. SUFFICIENT FOR AMIDE DEHYDRATION TO OCCUR A DIAMIDE OF THE FORMULA
Claim 2
Dependent Claim
27 words
THE SOLUBLE BASIC REACTION PRODUCT OBTAINED BY HEATING AT AN ELEVATED TEMPERATURE UP TO ABOUT 280*C. SUFFICIENT FOR AMIDE DEHYDRATION TO OCCUR A DIAMIDE OF THE FORMULA
References Cited (Backward Citations)
US2291396A
Cited
US2415356A
Cited
US2322201A
Cited
US2520720A
Cited
US2598213A
Cited
US2736568A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |