US3121750A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxyalkylated tris(hydroxymethyl)-aminomethanes
Assignee: Baker Petrolite LLC
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Filing: 1959-11-13
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Granted: 1964-02-18
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Expires: 1979-11-13
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
- 👤 Owen H Pettingill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:46
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/24; A; A01; A01N; A01N25/00; A01N25/30; C08; C08G; C08G59/00; C08G59/18; C08G59/40; C08G59/62; C08G59/64; C10; C10G; C10G33/00; C10G33/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
A COGENERIC MIXTURE OF A HOMOLOGOUS SERIES OF GLYCOL ETHERS OF TRIS(HYDROXYMETHYL)AMINOMAETHANE; SAID COGENERIC MIXTURE BEING DERIVED EXCLUSIVELY FROM TRIS(HYDROXYMETHYL)AMINOMETHANE REACTED SUCCESSIVELY WITH ETHYLENE OXIDE AND BUTYLENE OXIDE UNDER OXYALKYLATION CONDITIONS IN SUCH WEIGHT PROPORTIONS SO THE AVERAGE COMPOSITION OF SAID COGENERIC MIXTURE, STATED IN TERMS OF INITIAL REACTANTS, LIES APPROXIMATELY WITHIN THE 5-SIDED FIGURE OF THE ACCOMPANYING DRAWING IN WHICH THE MINIMUM TRIS(HYDROXYMETHYL)AMINOMETHANE CONTENT IS AT LEAST 1.5% AND WHICH 5-SIDED FIGURE IS IDENTIFIED BY THE FACT THAT ITS AREA LIES WITHIN THE STRAIGHT LINES CONNECTING A,B,C,D, AND H.
Claim 2
Dependent Claim
90 words
A COGENERIC MIXTURE OF A HOMOLOGOUS SERIES OF GLYCOL ETHERS OF TRIS(HYDROXYMETHYL)AMINOMAETHANE; SAID COGENERIC MIXTURE BEING DERIVED EXCLUSIVELY FROM TRIS(HYDROXYMETHYL)AMINOMETHANE REACTED SUCCESSIVELY WITH ETHYLENE OXIDE AND BUTYLENE OXIDE UNDER OXYALKYLATION CONDITIONS IN SUCH WEIGHT PROPORTIONS SO THE AVERAGE COMPOSITION OF SAID COGENERIC MIXTURE, STATED IN TERMS OF INITIAL REACTANTS, LIES APPROXIMATELY WITHIN THE 5-SIDED FIGURE OF THE ACCOMPANYING DRAWING IN WHICH THE MINIMUM TRIS(HYDROXYMETHYL)AMINOMETHANE CONTENT IS AT LEAST 1.5% AND WHICH 5-SIDED FIGURE IS IDENTIFIED BY THE FACT THAT ITS AREA LIES WITHIN THE STRAIGHT LINES CONNECTING A,B,C,D, AND H.
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) | 1967-02-17 | 1967-08-19 | 1968-02-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-02-17 | 1971-08-19 | 1972-02-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-02-17 | 1975-08-19 | 1976-02-18 | $7700.00 | Window Closed / Lapsed |