US2995573A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel products and methods for preparing acetals of alpha-keto aldehydes
Assignee: Union Carbide Corp
•
Filing: 1959-02-18
•
Granted: 1961-08-08
•
Expires: 1979-02-18
Abstract
No abstract record available.
Inventors
- 👤 Jr Harry A Stansbury
- 👤 David T Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:14
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/10; C07D317/12; C08; C08K; C08K5/00; C08K5/04; C08K5/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
36 words
A PROCESS FOR PRODUCING ACETALS OF ALPHA-KETO ADLEHYDES WHICH COMPRISES REACTING NITROSYL CHLORIDE, A SATURATED ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND CYCLOALIPHATIC MONOHYDRIC AND POLYHYDRIC ALCOHOLS, AND A METHYL KETONE OF THE FORMULA
Claim 2
Dependent Claim
36 words
A PROCESS FOR PRODUCING ACETALS OF ALPHA-KETO ADLEHYDES WHICH COMPRISES REACTING NITROSYL CHLORIDE, A SATURATED ALCOHOL SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND CYCLOALIPHATIC MONOHYDRIC AND POLYHYDRIC ALCOHOLS, AND A METHYL KETONE OF THE FORMULA
Claim 3
Dependent Claim
5 words
AS A NEW COMPOUND 2-(4-METHYL-1,3-DIOXOLAN-2YL)-2-PHENYL-4-METHYL-1,3-DIOXOLANE.
Claim 4
Dependent Claim
5 words
AS A NEW COMPOUND 2-(4-METHYL-1,3-DIOXOLAN-2YL)-2-PHENYL-4-METHYL-1,3-DIOXOLANE.
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) | 1964-08-07 | 1965-02-06 | 1965-08-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-07 | 1969-02-06 | 1969-08-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-07 | 1973-02-06 | 1973-08-08 | $7700.00 | Window Closed / Lapsed |