Process for the preparation of Roflumilast
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United States of America Patent
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Sep 29, 2015
Grant Date -
Sep 18, 2014
app pub date -
May 8, 2014
filing date -
Nov 9, 2011
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Abstract
The present invention relates to an improved process for the preparation of Roflumilast. The present invention also relates to crystalline Form-I of Roflumilast.
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- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
TIANISH LABORATORIES PRIVATE LIMITED | PLOT NO 564/A/22 ROAD NO 92 JUBILEE HILLS FILM NAGAR SHAIKPET HYDERABAD 500096 |
International Classification(s)
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Bindu, Manojkumar | Hyderabad, IN | 1 | 0 |
# of filed Patents : 1 Total Citations : 0 | |||
Gharat, Sushant | Hyderabad, IN | 2 | 0 |
# of filed Patents : 2 Total Citations : 0 | |||
Gore, Vinayak | Hyderabad, IN | 22 | 15 |
# of filed Patents : 22 Total Citations : 15 | |||
Kokane, Dattatrey | Hyderabad, IN | 12 | 7 |
# of filed Patents : 12 Total Citations : 7 | |||
Shinde, Dhananjay | Hyderabad, IN | 9 | 1 |
# of filed Patents : 9 Total Citations : 1 | |||
Vijaykar, Priyesh | Hyderabad, IN | 1 | 0 |
# of filed Patents : 1 Total Citations : 0 |
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Maintenance Fees
Fee | Large entity fee | small entity fee | micro entity fee | due date |
---|---|---|---|---|
11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Mar 29, 2027 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
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 |
Full Text
US Patent No: 7060850
Fluorous tagging and scavenging reactants and methods of synthesis and use thereof
Abstract
The present invention includes methods and compositions for increasing the fluorous nature of an organic compound by reacting it with at least one fluorous compound to produce a fluorous tagged organic compound. The increased fluorous nature of the fluorous tagged organic compound can then be utilized to separate the fluorous organic compound from untagged reagents, reactants, catalysts and/or products derived therefrom. The resultant fluorous tagged organic compound can be subjected to subsequent chemical transformations, wherein the fluorous nature of the tagged compound is utilized to increase the ease of separation of the fluorous tagged organic compound from untagged reagents, reactants, catalysts and/or products derived therefrom, after each chemical transformation. The chemical transformations result in a second fluorous tagged organic compound wherein the fluorous nature of the second fluorous tagged organic compound can then be reduced by removing the fluorous group therefrom, thereby producing a second organic compound that may be employed as a pharmaceutical compound or intermediate, or a combinatorial library component.
Description
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Legal Events
Date | Code | Event | Description |
---|---|---|---|
Jul 14, 2014 | STCH | INFORMATION ON STATUS: PATENT DISCONTINUATION | free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362 |
Jun 13, 2014 | FP | LAPSED DUE TO FAILURE TO PAY MAINTENANCE FEE | Effective Date: Jun 13, 2014 |
Jun 13, 2014 | LAPS | LAPSE FOR FAILURE TO PAY MAINTENANCE FEES | |
Jan 24, 2014 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Mar 08, 2010 | SULP | SURCHARGE FOR LATE PAYMENT | |
Mar 08, 2010 | FPAY | FEE PAYMENT | year of fee payment: 4 |
Jan 18, 2010 | REMI | MAINTENANCE FEE REMINDER MAILED | |
Jun 13, 2006 | I | Issuance | |
Apr 15, 2004 | P | Published | |
Nov 19, 2003 | AS | ASSIGNMENT | free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:ZHANG, WEI;LUO, ZHIYONG;NAGASHIMA, TADAMICHI;AND OTHERS;REEL/FRAME:014705/0808;SIGNING DATES FROM 20031106 TO 20031110 Owner name: FLUOROUS TECHNOLOGIES, INC., PENNSYLVANIA |
Jul 11, 2003 | F | Filing | |
Jul 11, 2002 | PD | Priority Date |

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