Patents Assigned to Tristrata Technology, Inc.
  • Patent number: 6767924
    Abstract: A composition comprising an amphoteric or pseudo-amphoteric agent and a polyhydroxy alpha hydroxyacid existing as a free acid, lactone, or salt, and isomeric or non-isomeric forms thereof is provided. The amphoteric or pseudo-amphoteric agent can be selected from amino acids, dipeptides, aminoaldonic acid, aminouronic acid, lauryl aminoproplyglycine, aminoaldaric acid, neuraminic acid desulfated heparin, deacetylated hyaluronic acid, hyalobiuronic acid, chondrosine, deacetylated chondroitin, creatine, creatinine, hydroxyproline, homocysteine, homocystine, homoserine, ornithine, citrulline, phosphatidylserine, and sphingomyelin. The composition may contain other additives, including cosmetic or pharmaceutical agents for topical treatment of dermatological disorders.
    Type: Grant
    Filed: December 6, 2000
    Date of Patent: July 27, 2004
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 6191167
    Abstract: Preventive as well as therapeutic treatment to alleviate cosmetic conditions and symptoms of dermatologic disorders with amphoteric compositions containing alpha hydroxyacids, alpha ketoacids, related compounds or polymeric forms of hydroxyacids is disclosed. The cosmetic conditions and the dermatologic disorders in which the amphoteric compositions and the polymeric compounds may be useful include dry skin, dandruff, acne, keratoses, psoriasis, eczema, pruritus, age spots, lentigines, melasmas, wrinkles, warts, blemished skin, hyperpigmented skin, kyperkeratotic skin, inflammatory dermatoses, skin changes associated with aging, and skin requiring cleansers.
    Type: Grant
    Filed: February 23, 1999
    Date of Patent: February 20, 2001
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 6060512
    Abstract: Preventive as well as therapeutic treatment to alleviate cosmetic conditions and symptoms of dermatologic disorders with amphoteric compositions containing alpha hydroxyacids, alpha ketoacids, related compounds or polymeric forms of hydroxyacids is disclosed. The cosmetic conditions and the dermatologic disorders in which the amphoteric compositions and the polymeric compounds may be useful include dry skin, dandruff, acne, keratoses, psoriasis, eczema, pruritus, age spots, lentigines, melasmas, wrinkles, warts, blemished skin, hyperpigmented skin, kyperkeratotic skin, inflammatory dermatoses, skin changes associated with aging, and skin requiring cleansers.
    Type: Grant
    Filed: November 4, 1998
    Date of Patent: May 9, 2000
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 6051609
    Abstract: Composition and method for enhancing therapeutic effects of topically applied agents are disclosed. The cosmetic or therapeutic composition may include one or more of cosmetic or pharmaceutical agents present in a total amount of from 0.01 to 40 percent and one or more of hydroxycarboxylic acids or related compounds present in a total amount of from 0.01 to 99 percent by weight of the total composition. The cosmetic and pharmaceutical agents may include but not limited to age spots, wrinkles and keratoses removing agents; vitamins; aloes; sun screens; tanning, depigmenting and shampooing agents; antiyeasts; antifungal, antibacterial and antiviral agents; topical bronchial dilators and topical cardiovascular agents; hormonal agents; vasodilators; retinoids and other dermatological agents. The hydroxycarboxylic acids and related compounds include organic alpha and beta hydroxycarboxylic acids, alpha and beta ketocarboxylic acids and salts thereof.
    Type: Grant
    Filed: December 30, 1998
    Date of Patent: April 18, 2000
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5962526
    Abstract: Composition and method for enhancing therapeutic effects of topically applied agents are disclosed. The cosmetic or therapeutic composition may include one or more of cosmetic or pharmaceutical agents present in a total amount of from 0.01 to 40 percent and one or more of hydroxycarboxylic acids or related compounds present in a total amount of from 0.01 to 99 percent by weight of the total composition. The cosmetic and pharmaceutical agents may include but not limited to age spots, wrinkles and keratoses removing agents; vitamins; aloes; sun screens; tanning, depigmenting and shampooing agents; antiyeasts; antifungal, antibacterial and antiviral agents; topical bronchial dilators and topical cardiovascular agents; hormonal agents; vasodilators; retinoids and other dermatological agents. The hydroxycarboxylic acids and related compounds include organic alpha and beta hydroxycarboxylic acids, alpha and beta ketocarboxylic acids and salts thereof.
    Type: Grant
    Filed: September 9, 1997
    Date of Patent: October 5, 1999
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5942250
    Abstract: Uses of topical compositions comprising a 2-hydroxycarboxylic acid or related compound to alleviate or improve signs of skin, nail and hair changes associated with intrinsic or extrinsic aging are disclosed. 2-Hydroxycarboxylic acids and their related compounds include, for example, 2-hydroxyethanoic acid, 2-hydroxypropanoic acid, 2-methyl 2-hydroxypropanoic acid, 2-phenyl 2-hydroxyethanoic acid, 2-phenyl 2-methyl 2-hydroxyethanoic acid, 2-phenyl 3-hydroxypropanoic acid, 2,2-diphenyl 2-hydroxyethanoic acid, 2-hydroxybutane-1,4-dioicacid, 2,3-hihydroxybutane-1,4-dioic acid, 2-carboxy 2-hydroxypentane-1,5-dioic acid, 2-ketopropanoic acid, methyl 2-ketopropanoate, ethyl 2-ketopropanoate, and gluconolactone.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 24, 1999
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5889054
    Abstract: Composition and method for enhancing therapeutic effects of topically applied agents are disclosed. The cosmetic or therapeutic composition may include one or more of cosmetic or pharmaceutical agents present in a total amount of from 0.01 to 40 percent and one or more of hydroxycarboxylic acids or related compounds present in a total amount of from 0.01 to 99 percent by weight of the total composition. The cosmetic and pharmaceutical agents may include but not limited to age spots, wrinkles and keratoses removing agents; vitamins; aloes; sun screens; tanning, depigmenting and shampooing agents; antiyeasts; antifungal, antibacterial and antiviral agents; topical bronchial dilators and topical cardiovascular agents; hormonal agents; vasodilators; retinoids and other dermatological agents. The hydroxycarboxylic acids and related compounds include organic alpha and beta hydroxycarboxylic acids, alpha and beta ketocarboxylic acids and salts thereof.
    Type: Grant
    Filed: September 8, 1997
    Date of Patent: March 30, 1999
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5886042
    Abstract: Preventive as well as therapeutic treatment to alleviate cosmetic conditions and symptoms of dermatologic disorders with amphoteric compositions containing alpha hydroxyacids, alpha ketoacids, related compounds or polymeric forms of hydroxyacids is disclosed. The cosmetic conditions and the dermatologic disorders in which the amphoteric compositions and the polymeric compounds may be useful include dry skin, dandruff, acne, keratoses, psoriasis, eczema, pruritus, age spots, lentigines, melasmas, wrinkles, warts, blemished skin, hyperpigmented skin, kyperkeratotic skin, inflammatory dermatoses, skin changes associated with aging, and skin requiring cleansers.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: March 23, 1999
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5886041
    Abstract: Preventive as well as therapeutic treatment to alleviate cosmetic conditions and symptoms of dermatologic disorders with amphoteric compositions containing alpha hydroxyacids, alpha ketoacids, related compounds or polymeric forms of hydroxyacids is disclosed. The cosmetic conditions and the dermatologic disorders in which the amphoteric compositions and the polymeric compounds may be useful include dry skin, dandruff, acne, keratoses, psoriasis, eczema, pruritus, age spots, lentigines, melasmas, wrinkles, warts, blemished skin, hyperpigmented skin, kyperkeratotic skin, inflammatory dermatoses, skin changes associated with aging, and skin requiring cleansers.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: March 23, 1999
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5883128
    Abstract: Preventive as wall as therapeutic treatment to alleviate cosmetic conditions and symptoms of dermatologic disorders with amphoteric compositions containing alpha hydroxyacids, alpha ketoacids, related compounds or polymeric forms of hydroxyacids is disclosed. The cosmetic conditions and the dermatologic disorders in which the amphoteric compositions and the polymeric compounds may be useful include dry skin, dandruff, acne, keratoses, psoriasis, eczema, pruritus, age spots, lentigines, melasmas, wrinkles, warts, blemished skin, hyperpigmented skin, kyperkeratotic skin, inflammatory dermatoses, skin changes associated with aging, and skin requiring cleansers.
    Type: Grant
    Filed: December 29, 1997
    Date of Patent: March 16, 1999
    Assignee: Tristrata Technology Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5856357
    Abstract: Composition and method for enhancing therapeutic effects of topically applied agents are disclosed. The cosmetic or therapeutic composition may include one or more of cosmetic or pharmaceutical agents present in a total amount of from 0.01 to 40 percent and one or more of hydroxycarboxylic acids or related compounds present in a total amount of from 0.01 to 99 percent by weight of the total composition. The cosmetic and pharmaceutical agents may include but not limited to age spots, wrinkles and keratoses removing agents; vitamins; aloes; sun screens; tanning, depigmenting and shampooing agents; antiyeasts; antifungal, antibacterial and antiviral agents; topical bronchial dilators and topical cardiovascular agents; hormonal agents; vasodilators; retinoids and other dermatological agents. The hydroxycarboxylic acids and related compounds include organic alpha and beta hydroxycarboxylic acids, alpha and beta ketocarboxylic acids and salts thereof.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: January 5, 1999
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5834510
    Abstract: Uses of topical compositions comprising a 2-hydroxycarboxylic acid or related compound to alleviate or improve signs of skin, nail and hair changes associated with intrinsic or extrinsic aging are disclosed. 2-Hydroxycarboxylic acids and their related compounds include, for example, 2-hydroxyethanoic acid, 2-hydroxypropanoic acid, 2-methyl 2-hydroxypropanoic acid, 2-phenyl 2-hydroxyethanoic acid, 2-phenyl 2-methyl 2-hydroxyethanoic acid, 2-phenyl 3-hydroxypropanoic acid, 2,2-diphenyl 2-hydroxyethanoic acid, 2-hydroxybutane-1,4-dioic acid, 2,3-hihydroxybutane-1,4-dioic acid, 2-carboxy 2-hydroxypentane-1,5-dioic acid, 2-ketopropanoic acid, methyl 2-ketopropanoate, ethyl 2-ketopropanoate, and gluconolactone.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 10, 1998
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5827882
    Abstract: Methods for visibly reducing a skin wrinkle and for reversing the effect of aging on human facial skin involving comprising topically applying to the wrinkle and/or affected facial skin ethyl pyruvate.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 27, 1998
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5716992
    Abstract: Methods for visibly reducing a skin wrinkle and for reversing the effect of aging on human facial skin involving comprising topically applying to the wrinkle and/or affected facial skin mucic acid or mucolactone.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: February 10, 1998
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5702688
    Abstract: Preventive as well as therapeutic treatment to alleviate cosmetic conditions and symptoms of dermatologic disorders with amphoteric compositions containing alpha hydroxyacids, alpha ketoacids, related compounds or polymeric forms of hydroxyacids is disclosed. The cosmetic conditions and the dermatologic disorders in which the amphoteric compositions and the polymeric compounds may be useful include dry skin, dandruff, ache, keratoses, psoriasis, eczema, pruritus, age spots, lentigines, melasmas, wrinkles, warts, blemished skin, hyperpigmented skin, kyperkeratotic skin, inflammatory dermatoses, skin changes associated with aging, and skin requiring cleansers.
    Type: Grant
    Filed: October 7, 1993
    Date of Patent: December 30, 1997
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5691378
    Abstract: Composition and method for enhancing therapeutic effects of topically applied agents are disclosed. The cosmetic or therapeutic composition may include one or more of cosmetic or pharmaceutical agents present in a total amount of from 0.01 to 40 percent and one or more of hydroxycarboxylic acids or related compounds present in a total amount of from 0.01 to 99 percent by weight of the total composition. The cosmetic and pharmaceutical agents may include but not limited to age spots, wrinkles and keratoses removing agents; vitamins; aloes; sun screens; tanning, depigmenting and shampooing agents; antiyeasts; antifungal, antibacterial and antiviral agents; topical bronchial dilators and topical cardiovascular agents; hormonal agents; vasodilators; retinoids and other dermatological agents. The hydroxycarboxylic acids and related compounds include organic alpha and beta hydroxycarboxylic acids, alpha and beta ketocarboxylic acids and salts thereof.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 25, 1997
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5690967
    Abstract: Compositions for improved topical delivery of lactic acid comprising lactic acid and an amphoteric or pseudoamphoteric agent.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 25, 1997
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5686489
    Abstract: Alpha hydroxyacid esters and related compounds on topical application induced increased skin thickness due to new biosyntheses of dermal components including glycosaminoglycans, proteoglycans, collagen and elastin. Such dermal effects are desirable and beneficial for topical use and treatment of aging related integumental changes including age spots, skin lines, wrinkles, photoaging and aging skin.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: November 11, 1997
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5681853
    Abstract: Methods for improved topical delivery of an alpha hydroxyacid, alpha ketoacid or related compound.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: October 28, 1997
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott
  • Patent number: 5677340
    Abstract: Methods for visibly reducing a skin wrinkle and for reversing the effect of aging on human facial skin involving comprising topically applying to the wrinkle and/or affected facial skin gluconic acid or gluconolactone.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: October 14, 1997
    Assignee: Tristrata Technology, Inc.
    Inventors: Ruey J. Yu, Eugene J. Van Scott