Synthesis of vicinal alkanedithiols
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 11, 1992
Grant Date -
N/A
app pub date -
Feb 7, 1990
filing date -
Feb 8, 1989
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The invention relates to the manufacture of vicinal alkanedithiols from the corresponding alkylene trithiocarbonates. The method according to the invention consists in treating alkylene trithiocarbonate with an alkaline sulfide, followed by acidification of the reaction medium. The method is particularly well-suited for the synthesis of ethanedithiol from ethylene trithiocarbonate.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
SOCIETE NATIONALE ELF AQUITAINE (PRODUCTION) TOUR ELF 2 PLACE DE LA COUPOLE LA DEFENSE 6 92400 COURBEVOIE FRANCE | Not Provided |
International Classification(s)

- 1990 Application Filing Year
- C07C Class
- 1906 Applications Filed
- 21 Patents Issued To-Date
- 1.11 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Labat, Yves | Pau, FR | 16 | 55 |
# of filed Patents : 16 Total Citations : 55 | |||
Vallee, Yannick | Caen, FR | 4 | 23 |
# of filed Patents : 4 Total Citations : 23 |
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Patent Citation Ranking
- 1 Citation Count
- C07C Class
- 0 % this patent is cited more than
- 33 Age
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
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Fee | Large entity fee | small entity fee | micro entity fee |
---|---|---|---|
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
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