Patent US4928127A successfully refreshed from Google Patents.
Patent US2783222A successfully refreshed from Google Patents.
US2783222A
Expired / Lapsed
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Well drilling composition and method of manufacture thereof
Assignee: Columbia Southern Chemical Corp
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Filing: 1953-05-12
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Granted: 1957-02-26
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Expires: 1973-05-12
Abstract
No abstract record available.
Inventors
- 👤 Henry W Rahn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:01
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/02; C09K8/03; C09K8/035
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
77 words
A METHOD WHICH COMPRISES DIGESTING A NATURALLY OCCURRING MATERIAL WHICH CONTAINS WATER SOLUBLE COMPONENTS AND AT LEAST 10 PERCENT BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF TANNIC ACID AND HUMIC ACID WITH ENOUGH AQUEOUS ALKALI METAL HYDROXIDE TO INCREASE THE WATER DISPERSIBILITY OF THE SUBSTANCE AND TO PRODUCE ANALKALINE PRODUCT, AND ADDING TO SUCH PRODUCT AN ACIDIC MATERIAL OF THE GROUP CONSISTING OF TANNIC ACID AND HUMIC ACID, AND THEREBY REDUCING THE ALKALINITY THEREOF.
Claim 2
Independent Claim
77 words
A METHOD WHICH COMPRISES DIGESTING A NATURALLY OCCURRING MATERIAL WHICH CONTAINS WATER SOLUBLE COMPONENTS AND AT LEAST 10 PERCENT BY WEIGHT OF A MEMBER OF THE GROUP CONSISTING OF TANNIC ACID AND HUMIC ACID WITH ENOUGH AQUEOUS ALKALI METAL HYDROXIDE TO INCREASE THE WATER DISPERSIBILITY OF THE SUBSTANCE AND TO PRODUCE ANALKALINE PRODUCT, AND ADDING TO SUCH PRODUCT AN ACIDIC MATERIAL OF THE GROUP CONSISTING OF TANNIC ACID AND HUMIC ACID, AND THEREBY REDUCING THE ALKALINITY THEREOF.
Claim 3
Dependent Claim
62 words
THE REACTION OF A MEMBER OF THE GROUP CONSISTING OF TANNIC ACID AND HUMIC ACID WITH THE HEAT DIGESTED REACTION PRODUCT OF A NATURALLY OCCURING SUBSTANCE WHICH CONTAINS AT LEAST 10 PERCENT BY WEIGHT OF A MEMBER OF A GROUP AND WATER-INSOLUBLE COMPONENETS WITH ENOUGH ALKALI METAL HYDROXIDE TO INCREASE THE WATER DISPERSIBILITY OF THE SUBSTANCE AND TO PRODUCE AN ALKALINE PRODUCT.
Claim 4
Dependent Claim
62 words
THE REACTION OF A MEMBER OF THE GROUP CONSISTING OF TANNIC ACID AND HUMIC ACID WITH THE HEAT DIGESTED REACTION PRODUCT OF A NATURALLY OCCURING SUBSTANCE WHICH CONTAINS AT LEAST 10 PERCENT BY WEIGHT OF A MEMBER OF A GROUP AND WATER-INSOLUBLE COMPONENETS WITH ENOUGH ALKALI METAL HYDROXIDE TO INCREASE THE WATER DISPERSIBILITY OF THE SUBSTANCE AND TO PRODUCE AN ALKALINE PRODUCT.
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) | 1960-02-26 | 1960-08-27 | 1961-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-02-26 | 1964-08-27 | 1965-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-02-26 | 1968-08-27 | 1969-02-26 | $7700.00 | Window Closed / Lapsed |