Patent US3157682A successfully refreshed from Google Patents.
US3157682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-soluble liquid chelate compounds and their preparation
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1960-11-04
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Granted: 1964-11-17
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Expires: 1980-11-04
Abstract
No abstract record available.
Inventors
- 👤 Hugh E Ramsden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:44
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/18; C10L1/1814; C10L1/30; C10L1/301; Y; Y10; Y10S; Y10S423/00; Y10S423/09; Y10S423/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
A PROCESS FOR MAKING LIQUID METAL ORGANIC CHELATES COMPRISING ADMIXING A B-KETO ESTER WITH AN AQUEOUS BASIC SOLUTION CONTAINING FROM 50 TO 98% BY WEIGHT OF THE THERORETICAL BAE, SAID B-KETO ESTER HAVING THE FORMULA:
Claim 2
Dependent Claim
35 words
A PROCESS FOR MAKING LIQUID METAL ORGANIC CHELATES COMPRISING ADMIXING A B-KETO ESTER WITH AN AQUEOUS BASIC SOLUTION CONTAINING FROM 50 TO 98% BY WEIGHT OF THE THERORETICAL BAE, SAID B-KETO ESTER HAVING THE FORMULA:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |