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An Improved Process For The Preparation Of Rifamycin Derivatives
Abstract: The present invention relates to an improved and industrially advantageous process for the preparation of Rifaximin with high purity and yield. Particularly the present invention relates to improved processes for the preparation of Rifaximin from Rifamycin O and S. More particularly the present invention relates to a process for the preparation of Rifaximin through 3 halorifamycin S. The present invention further relates to a novel polymorph of Rifaximin and process for its preparation.
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Notices, Deadlines & Correspondence
Notices, Deadlines & Correspondence
Patent Information
Application #
Filing Date
18 November 2016
Publication Number
02/2017
Publication Type
INA
Invention Field
CHEMICAL
Status
Email
pgn.ipm@granulesindia.com
Parent Application
Patent Number
Legal Status
Grant Date
2020-09-05
Renewal Date
Applicants
GRANULES INDIA LIMITED
2nd Floor 3rd Block
My Home Hub Madhapur
Telangana
Hyderabad 500081
Inventors
1. VETUKURI VNKV Prasada Raju
2nd Floor 3rd Block
My Home Hub Madhapur
Telangana.
Hyderabad 500081
2. GILLA Goverdhan
2nd Floor 3rd Block
My Home Hub Madhapur
Telangana.
Hyderabad 500081
3. BOINI Ambaiah
2nd Floor 3rd Block
My Home Hub Madhapur
Telangana.
Hyderabad 500081
4. CHIGURUPATI Krishna Prasad
2nd Floor 3rd Block
My Home Hub Madhapur
Telangana.
Hyderabad 500081
Specification
SOFT COPY ATTACHED IN PDF
Documents
Application Documents
| # | Name | Date |
|---|---|---|
| 1 | Wipo Publication Page_As Filed_18-11-2016.pdf | 2016-11-18 |
| 2 | IB304_As Filed_18-11-2016.pdf | 2016-11-18 |
| 3 | Form5_As Filed_18-11-2016.pdf | 2016-11-18 |
| 4 | Form3_As Filed_18-11-2016.pdf | 2016-11-18 |
| 5 | Form26_Power of Attorney_18-11-2016.pdf | 2016-11-18 |
| 6 | Form2 Title Page_Complete_18-11-2016.pdf | 2016-11-18 |
| 7 | Drawings_As Filed_18-11-2016.pdf | 2016-11-18 |
| 8 | Description Complete_As Filed_18-11-2016.pdf | 2016-11-18 |
| 9 | Claims_As Filed_18-11-2016.pdf | 2016-11-18 |
| 10 | Abstract_As Filed_18-11-2016.pdf | 2016-11-18 |
| 11 | Form3_After Filing_19-12-2016.pdf | 2016-12-19 |
| 12 | Form 26 [14-06-2017(online)].pdf | 2017-06-14 |
| 13 | Form 13 [03-07-2017(online)].pdf | 2017-07-03 |
| 14 | 201647039399-Retyped Pages under Rule 14(1) (MANDATORY) [25-09-2017(online)].pdf | 2017-09-25 |
| 15 | 201647039399-FORM 3 [25-09-2017(online)].pdf | 2017-09-25 |
| 16 | 201647039399-2. Marked Copy under Rule 14(2) (MANDATORY) [25-09-2017(online)].pdf | 2017-09-25 |
| 17 | 201647039399-FORM 18 [27-09-2017(online)].pdf | 2017-09-27 |
| 18 | 201647039399-FER.pdf | 2019-07-31 |
| 19 | 201647039399-RELEVANT DOCUMENTS [10-01-2020(online)].pdf | 2020-01-10 |
| 20 | 201647039399-RELEVANT DOCUMENTS [10-01-2020(online)]-1.pdf | 2020-01-10 |
| 21 | 201647039399-PETITION UNDER RULE 137 [10-01-2020(online)].pdf | 2020-01-10 |
| 22 | 201647039399-OTHERS [10-01-2020(online)].pdf | 2020-01-10 |
| 23 | 201647039399-FER_SER_REPLY [10-01-2020(online)].pdf | 2020-01-10 |
| 24 | 201647039399-CORRESPONDENCE [10-01-2020(online)].pdf | 2020-01-10 |
| 25 | 201647039399-CLAIMS [10-01-2020(online)].pdf | 2020-01-10 |
| 26 | 201647039399-ABSTRACT [10-01-2020(online)].pdf | 2020-01-10 |
| 27 | 201647039399-HearingNoticeLetter-(DateOfHearing-17-02-2020).pdf | 2020-01-30 |
| 28 | 201647039399-ExtendedHearingNoticeLetter-(DateOfHearing-17-02-2020).pdf | 2020-02-13 |
| 29 | 201647039399-Correspondence to notify the Controller [13-02-2020(online)].pdf | 2020-02-13 |
| 30 | 201647039399-Written submissions and relevant documents [27-02-2020(online)].pdf | 2020-02-27 |
| 31 | 201647039399-Annexure [27-02-2020(online)].pdf | 2020-02-27 |
| 32 | 201647039399-Written submissions and relevant documents [04-03-2020(online)].pdf | 2020-03-04 |
| 33 | 201647039399-Annexure [04-03-2020(online)].pdf | 2020-03-04 |
| 34 | 201647039399-US(14)-ExtendedHearingNotice-(HearingDate-11-08-2020).pdf | 2020-07-28 |
| 35 | 201647039399-FORM-8 [14-08-2020(online)].pdf | 2020-08-14 |
| 36 | 201647039399-Written submissions and relevant documents [21-08-2020(online)].pdf | 2020-08-21 |
| 37 | 201647039399-Annexure [21-08-2020(online)].pdf | 2020-08-21 |
| 38 | 201647039399-RELEVANT DOCUMENTS [26-08-2020(online)].pdf | 2020-08-26 |
| 39 | 201647039399-MARKED COPIES OF AMENDEMENTS [26-08-2020(online)].pdf | 2020-08-26 |
| 40 | 201647039399-FORM 13 [26-08-2020(online)].pdf | 2020-08-26 |
| 41 | 201647039399-AMMENDED DOCUMENTS [26-08-2020(online)].pdf | 2020-08-26 |
| 42 | 201647039399-Marked Copy_Granted 346132_04-09-2020.pdf | 2020-09-04 |
| 43 | 201647039399-Description Complete_Granted 346132_04-09-2020.pdf | 2020-09-04 |
| 44 | 201647039399-Claims_Granted 346132_04-09-2020.pdf | 2020-09-04 |
| 45 | 201647039399-Abstract_Granted 346132_04-09-2020.pdf | 2020-09-04 |
| 46 | 201647039399-PatentCertificate05-09-2020.pdf | 2020-09-05 |
| 47 | 201647039399-IntimationOfGrant05-09-2020.pdf | 2020-09-05 |
| 48 | 201647039399-RELEVANT DOCUMENTS [14-03-2021(online)].pdf | 2021-03-14 |
| 49 | 201647039399-RELEVANT DOCUMENTS [30-03-2022(online)].pdf | 2022-03-30 |
| 50 | 201647039399-RELEVANT DOCUMENTS [17-04-2023(online)].pdf | 2023-04-17 |
Search Strategy
| 1 | search_31-07-2019.pdf |