US2690446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of chemical reactions
Assignee: Colgate Palmolive Co
•
Filing: 1948-06-09
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Granted: 1954-09-28
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Expires: 1968-06-09
Abstract
No abstract record available.
Inventors
- 👤 Lowell A Ledgett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:14
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/42
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE METHOD OF NEUTRALIZING AN ORGANIC SULPHONIC ACID WHICH COMPRISES MAINTAINING AN AQUEOUS BODY OF NEUTRALIZED MATERIAL IN A VESSEL UNDER SUB-ATMOSPHERIC PRESSURE, CONTINUOUSLY WITHDRAWING A STREAM OF SAID MATERIAL FROM SAID BODY, CONTINUOUSLY INTRODUCING STREAM OF SAID ACID AND AN AQUEOUS ALKALI INTO SAID STREAM OF MATERIAL IN A ZONE OF INTENSE MECHANICALLY INDUCED AGITATION, AND CONTINUOUSLY INTRODUCING THE COMBINED STREAM INTO THE SPACE IN SAID VESSEL ABOVE THE LEVEL OF SAID BODY THROUGH AN ORIFICE OF SUCH SIZE THAT THE VOLATILE MATERIALS IN SAID COMBINED STREAM ARE KEPT IN LIQUID PHASE PRIOR TO INTRODUCTION.
Claim 2
Independent Claim
96 words
THE METHOD OF NEUTRALIZING AN ORGANIC SULPHONIC ACID WHICH COMPRISES MAINTAINING AN AQUEOUS BODY OF NEUTRALIZED MATERIAL IN A VESSEL UNDER SUB-ATMOSPHERIC PRESSURE, CONTINUOUSLY WITHDRAWING A STREAM OF SAID MATERIAL FROM SAID BODY, CONTINUOUSLY INTRODUCING STREAM OF SAID ACID AND AN AQUEOUS ALKALI INTO SAID STREAM OF MATERIAL IN A ZONE OF INTENSE MECHANICALLY INDUCED AGITATION, AND CONTINUOUSLY INTRODUCING THE COMBINED STREAM INTO THE SPACE IN SAID VESSEL ABOVE THE LEVEL OF SAID BODY THROUGH AN ORIFICE OF SUCH SIZE THAT THE VOLATILE MATERIALS IN SAID COMBINED STREAM ARE KEPT IN LIQUID PHASE PRIOR TO INTRODUCTION.
References Cited (Backward Citations)
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US2594875A
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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) | 1957-09-27 | 1958-03-29 | 1958-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-27 | 1962-03-29 | 1962-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-27 | 1966-03-29 | 1966-09-28 | $7700.00 | Window Closed / Lapsed |