Patents by Inventor Stephen Cherkez

Stephen Cherkez has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20220024943
    Abstract: Disclosed are topical compositions and methods of treatment of skin disorders selected from Molluscum contagiosum, verrucae and warts by topical administration to a subject in need thereof of a composition comprising between about 0.5%-1.0% w/w high-purity cantharidin. Also disclosed are processes for preparation of high-purity cantharidin.
    Type: Application
    Filed: July 26, 2021
    Publication date: January 27, 2022
    Applicant: Sol-Gel Technologies Ltd.
    Inventor: Stephen CHERKEZ
  • Publication number: 20210283052
    Abstract: The present invention provides a pH dependent vaginal composition delivering a therapeutically effective amount of at least one active essentially at a pH above 4.5. The composition provides a diagnostic visual pH indication of the presence of vulvovaginitis at pH above 4.5. In the absence of such indication, the treatment may be discontinued. Another visual signal is the retrieval of the unchanged composition, which also points to a normal pH at or below 4.5 and absence of vulvovaginitis.
    Type: Application
    Filed: April 5, 2021
    Publication date: September 16, 2021
    Applicant: EVE PHARMA LTD.
    Inventors: Eran Eilat, Stephen Cherkez
  • Patent number: 10987306
    Abstract: The present invention provides a pH dependent vaginal composition delivering a therapeutically effective amount of at least one active essentially at a pH above 4.5. The composition provides a diagnostic visual pH indication of the presence of vulvovaginitis at pH above 4.5. In the absence of such indication, the treatment may be discontinued. Another visual signal is the retrieval of the unchanged composition, which also points to a normal pH at or below 4.5 and absence of vulvovaginitis.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: April 27, 2021
    Assignee: Eve Pharma Ltd.
    Inventors: Eran Eilat, Stephen Cherkez
  • Patent number: 10954191
    Abstract: The present application provides novel process for the preparation of glycopyrrolate tosylate.
    Type: Grant
    Filed: March 12, 2018
    Date of Patent: March 23, 2021
    Assignee: Sol-Gel Technologies Ltd.
    Inventors: Stephen Cherkez, Veera Reddy Arava, Madhusudhanarao Rayapureddi, Venkateswarlu Jasti
  • Publication number: 20200377455
    Abstract: The present application provides novel process for the preparation of glycopyrrolate tosylate.
    Type: Application
    Filed: March 12, 2018
    Publication date: December 3, 2020
    Applicant: SOL-GEL TECHNOLOGIES LTD.
    Inventors: Stephen CHERKEZ, Veera Reddy ARAVA, Madhusudhanarao RAYAPUREDDI, Venkateswarlu JASTI
  • Publication number: 20190015369
    Abstract: The present disclosure relates to methods of treatment of acne in a patient in need thereof, comprising the concomitant once daily topical administration of from about 20 w/w to about 10% w/w of solid particulate benzoyl peroxide (BPO) and from about 0.01% w/w to about 0.1% w/w of solid particulate all trans retinoic acid (ATRA) for a period of up to 3 months, wherein the side-effects of the two actives are medically acceptable and wherein the therapeutic effect of BPO and ATRA is superior to the effect of each active administered alone. The concomitant administration may be carried out by once daily administration to a patient in need thereof of a single composition or of a first composition comprising BPO and a second composition comprising ATRA from a dual chamber dispenser or from two separate dispensers, mixed before applying on the skin of a patient in need thereof for up to 2 weeks, up to 1 month, preferably up to 2 months and more preferably up to 3 months.
    Type: Application
    Filed: May 13, 2018
    Publication date: January 17, 2019
    Applicant: SOL-GEL TECHNOLOGIES LTD.
    Inventors: Moshe Arkin, Stephen Cherkez, Ofer Toledano
  • Publication number: 20190015368
    Abstract: The present disclosure relates to methods of treatment of acne in a patient in need thereof, comprising the concomitant once daily topical administration of from about 2% w/w to about 10% w/w of solid particulate benzoyl peroxide (BPO) and from about 0.01% w/w to about 0.1% w/w of solid particulate all trans retinoic acid (ATRA) for a period of up to 3 months, wherein the side-effects of the two actives are medically acceptable and wherein the therapeutic effect of BPO and ATRA is superior to the effect of each active administered alone. The concomitant administration may be carried out by once daily administration to a patient in need thereof of a single composition or of a first composition comprising BPO and a second composition comprising ATRA from a dual chamber dispenser or from two separate dispensers, mixed before applying on the skin of a patient in need thereof for up to 2 weeks, up to 1 month, preferably up to 2 months and more preferably up to 3 months.
    Type: Application
    Filed: July 12, 2017
    Publication date: January 17, 2019
    Applicant: SOL-GEL TECHNOLOGIES LTD.
    Inventors: Moshe ARKIN, Stephen CHERKEZ, Ofer TOLEDANO
  • Publication number: 20180064647
    Abstract: The present invention provides a pH dependent vaginal composition delivering a therapeutically effective amount of at least one active essentially at a pH above 4.5. The composition provides a diagnostic visual pH indication of the presence of vulvovaginitis at pH above 4.5. In the absence of such indication, the treatment may be discontinued. Another visual signal is the retrieval of the unchanged composition, which also points to a normal pH at or below 4.5 and absence of vulvovaginitis.
    Type: Application
    Filed: November 14, 2017
    Publication date: March 8, 2018
    Inventors: Eran Eilat, Stephen Cherkez
  • Patent number: 7943771
    Abstract: Provided is a process for producing highly pure 4-amino-1-isobutyl-1H-imidazo[4,5-c]quinoline (imiquimod), which includes reacting 4-chloro-1-isobutyl-1H-imidazo[4,5-c]quinoline with a non-gaseous amine precursor. Also provided are methods for isolating highly pure imiquimod. Further provided are intermediates useful in the production of imiquimod, methods for producing such intermediates, and methods for obtaining imiquimod from such intermediates.
    Type: Grant
    Filed: January 24, 2007
    Date of Patent: May 17, 2011
    Assignee: Chemagis Ltd.
    Inventors: Vladimir Naddaka, Eyal Klopfer, Shady Saeed, Stephen Cherkez, Oded Arad
  • Patent number: 7659398
    Abstract: The present invention provides a process for preparing highly pure 4-amino-1-isobutyl-1H-imidazo[4,5-c]quinoline (imiquimod). The process preferably includes heating 4-chloro-1-isobutyl-1H-imidazo[4,5-c]quinoline of formula (II) with ammonia in a polar aprotic solvent at relatively moderate pressure to produce imiquimod, and optionally purifying the imiquimod. The process of the present invention can produce highly pure imiquimod in high yield.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: February 9, 2010
    Assignee: Chemagis Ltd.
    Inventors: Vladimir Naddaka, Shady Saeed, Stephen Cherkez, Oded Arad
  • Publication number: 20100029602
    Abstract: Provided is a topical cream composition for the delivery of mometasone furoate comprising low dose mometasone furoate for the treatment of corticosteroid responsive dermatoses. The composition of the present invention can be safely applied over large surface areas of the skin (including areas with wrinkles and/or hair), and can be used therapeutically for extended periods of time (e.g., greater than 3 weeks). Treatment with the composition of the present invention carries reduced and/or fewer side effects compared with commercially available mometasone furoate cream products. The cream composition of the present invention is safe for the use of babies and infants under 2 years old. Additionally provided are methods of preparing and using the composition of the invention.
    Type: Application
    Filed: August 4, 2009
    Publication date: February 4, 2010
    Applicant: Perrigo Israel Pharmaceuticals Ltd.
    Inventors: Moshe Arkin, Amira Zeevi, Stephen Cherkez, Eilon Asculai, Rina Uzan, Bella Braghinski
  • Publication number: 20080194822
    Abstract: The present invention provides a process for preparing highly pure 4-amino-1-isobutyl-1H-imidazo[4,5-c]quinoline (imiquimod). The process preferably includes heating 4-chloro-1-isobutyl-1H-imidazo[4,5-c]quinoline of formula (II) with ammonia in a polar aprotic solvent at relatively moderate pressure to produce imiquimod, and optionally purifying the imiquimod. The process of the present invention can produce highly pure imiquimod in high yield.
    Type: Application
    Filed: February 14, 2007
    Publication date: August 14, 2008
    Applicant: CHEMAGIS LTD.
    Inventors: Vladimir Naddaka, Shady Saeed, Stephen Cherkez, Oded Arad
  • Publication number: 20080177074
    Abstract: Provided is a process for producing highly pure 4-amino-1-isobutyl-1H-imidazo[4,5-c]quinoline (imiquimod), which includes reacting 4-chloro-1-isobutyl-1H-imidazo[4,5-c]quinoline with a non-gaseous amine precursor. Also provided are methods for isolating highly pure imiquimod. Further provided are intermediates useful in the production of imiquimod, methods for producing such intermediates, and methods for obtaining imiquimod from such intermediates.
    Type: Application
    Filed: January 24, 2007
    Publication date: July 24, 2008
    Applicant: CHEMAGIS LTD.
    Inventors: Vladimir Naddaka, Eyal Klopfer, Shady Saeed, Stephen Cherkez, Oded Arad
  • Publication number: 20070254953
    Abstract: Pharmaceutical, cosmetic and cosmeceutical compositions for topical application, containing, as active ingredients, urea and/or derivatives thereof and alpha-hydroxy acid and/or an ammonium salt thereof, such as ammonium lactate, processes of manufacturing same and use of same in the treatment of medical and cosmetic skin and scalp conditions.
    Type: Application
    Filed: March 12, 2007
    Publication date: November 1, 2007
    Applicant: Perrigo Israel Pharmaceuticals Ltd.
    Inventors: Moshe Arkin, Nir Avram, Olga Buriakovsky, Amira Zeevi, Benjamin Schneider, Stephen Cherkez, Stella Nivy
  • Publication number: 20050159477
    Abstract: The invention provides stable amorphous calcium pseudomonate.
    Type: Application
    Filed: January 3, 2005
    Publication date: July 21, 2005
    Applicant: CHEMAGIS LTD
    Inventors: Alexander Weisman, Joseph Kaspi, Stephen Cherkez
  • Publication number: 20050137164
    Abstract: Novel NSAID pharmaceutical compositions and methods for the treatment of skin disease and disorders such as actinic keratosis using same are disclosed.
    Type: Application
    Filed: September 22, 2004
    Publication date: June 23, 2005
    Inventors: Moshe Arkin, Amira Zeevi, Stephen Cherkez, Eilon Asculai, Chalil Abu-Gnim, Ido Yosha, Michal Arnon, Hila Ohayon-Tsahor, Oren Chen, Galia Fridler
  • Publication number: 20050123575
    Abstract: A process of preparing a spreadable composition containing a hard fat, spreadable compositions prepared thereby and methods of using spreadable pharmaceutical, cosmetic and cosmeceutical compositions are provided.
    Type: Application
    Filed: March 8, 2004
    Publication date: June 9, 2005
    Inventors: Eilon Asculai, Amira Zeevi, Stephen Cherkez, Benjamin Schneider
  • Publication number: 20050069499
    Abstract: A foamable composition being devoid of CFCs and buffer, which produces quick-breaking foam and optionally comprises pharmaceutically active ingredients such as corticosteroids is disclosed. Methods of treatment using the same and processes of manufacturing the same are also disclosed.
    Type: Application
    Filed: March 30, 2004
    Publication date: March 31, 2005
    Inventors: Moshe Arkin, Rina Uzan, Natalie Grabarnick, Benjamin Schneider, Stephen Cherkez, Eilon Asculai, Amira Zeevi, Chalil Abu-Gnim
  • Publication number: 20050042182
    Abstract: Pharmaceutical, cosmetic and cosmeceutical foamable compositions for topical application, containing, as an active ingredient, urea and/or a derivative thereof, processes of manufacturing these compositions and uses of these compositions in the treatment of various dermatological conditions such as, for example, conditions associated with dry skin and/or scalp.
    Type: Application
    Filed: May 21, 2004
    Publication date: February 24, 2005
    Inventors: Moshe Arkin, Nir Avram, Olga Buriakovsky, Amira Zeevi, Benjamin Schneider, Stephen Cherkez
  • Publication number: 20050036953
    Abstract: Pharmaceutical, cosmetic and cosmeceutical compositions for topical application, containing, as an active ingredient, ammonium lactate and/or any other alpha-hydroxy carboxylic acid and/or salts thereof, processes of manufacturing these compositions and uses of these compositions in the treatment of medical and cosmetic conditions such as conditions associated with dry skin or scalp.
    Type: Application
    Filed: May 21, 2004
    Publication date: February 17, 2005
    Inventors: Moshe Arkin, Nir Avram, Olga Buriakovsky, Amira Zeevi, Benjamin Schneider, Stephen Cherkez, Stella Nivy