US2708200A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pentaerythrite dihalohydrin monosulfurous acid esters
Assignee: Henkel AG and Co KGaA
•
Filing: 1952-08-05
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Granted: 1955-05-10
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Expires: 1972-08-05
Abstract
No abstract record available.
Inventors
- 👤 Pietsch Helmut
- 👤 Nagel Horstmar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:01
CPC Classifications
C; C07; C07D; C07D327/00; C07D327/10
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
42 words
METHOD FOR THE PREPARATION OF PENTAERYTHRITE DERIVATIVES, WHICH COMPRISES CONTACTING A PENTAERYTHRITE DIHALOHYDRIN, THE HALOGEN BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, WITH THIONYL CHLORIDE AND RECOVERING A PENTAERYTHRITE DIHALOHYDRIN MONOSULFUROUS ACID ESTER HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
42 words
METHOD FOR THE PREPARATION OF PENTAERYTHRITE DERIVATIVES, WHICH COMPRISES CONTACTING A PENTAERYTHRITE DIHALOHYDRIN, THE HALOGEN BEING A MEMBER SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, WITH THIONYL CHLORIDE AND RECOVERING A PENTAERYTHRITE DIHALOHYDRIN MONOSULFUROUS ACID ESTER HAVING THE GENERAL FORMULA
Claim 3
Dependent Claim
28 words
AS A NEW CHEMICAL COMPOUND, A PENTAERYTHRITE DIHALOHYDRIN MONOSULFUROUS ACID ESTER SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITE DICHLOROHYDRIN MONOSULFUROUS ACID ESTER AND PENTAERYTHRITE DIBROMOHYDRIN MONOSULFUROUS ACID ESTER.
Claim 4
Dependent Claim
28 words
AS A NEW CHEMICAL COMPOUND, A PENTAERYTHRITE DIHALOHYDRIN MONOSULFUROUS ACID ESTER SELECTED FROM THE GROUP CONSISTING OF PENTAERYTHRITE DICHLOROHYDRIN MONOSULFUROUS ACID ESTER AND PENTAERYTHRITE DIBROMOHYDRIN MONOSULFUROUS ACID ESTER.
References Cited (Backward Citations)
US2471274A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-05-09 | 1958-11-08 | 1959-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-05-09 | 1962-11-08 | 1963-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-05-09 | 1966-11-08 | 1967-05-10 | $7700.00 | Window Closed / Lapsed |