Patent US3109846A successfully refreshed from Google Patents.
US3109846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored reaction products produced by reaction of sulfato betaines with alkali
Assignee: Pure Oil Co
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Filing: 1960-12-23
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Granted: 1963-11-05
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Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 Donald L Klass
- 👤 Brozowski Vincent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:29
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/06; C07D213/16; C07D213/20; C09; C09B; C09B57/00; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/919
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
20 words
A PROCESS FOR PREPARING ORGANIC NITROGEN COMPOUNDS COMPRISING REACTING AN AQUEOUS ALKALI HYDROXIDE SOLUTION WITH A BETAINE OF THE FORMULA
Claim 2
Dependent Claim
20 words
A PROCESS FOR PREPARING ORGANIC NITROGEN COMPOUNDS COMPRISING REACTING AN AQUEOUS ALKALI HYDROXIDE SOLUTION WITH A BETAINE OF THE FORMULA
Claim 3
Dependent Claim
12 words
A PROCESS IN ACCORDANCE WITH CLAIM 1 IN WHICH A$ IS PYRIDINE.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-11-04 | 1967-05-06 | 1967-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-11-04 | 1971-05-06 | 1971-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-11-04 | 1975-05-06 | 1975-11-05 | $7700.00 | Window Closed / Lapsed |