Patents Represented by Attorney Diane R. Eckert Seamans Cherin & Mellott, LLC Meyers
-
Patent number: 6145468Abstract: A method for determining silver concentration in a solution is disclosed. This method generally comprises immersing a substantially pure, elemental, copper strip in a sample of the solution to be tested, agitating the strip in the sample, removing the strip from the sample, and observing the color change, if any, of the strip. These strips are generally greater than 99% pure copper, and have been coated with a metal ion layer. An alternative embodiment provides for removal of the metal ion layer immediately before testing the silver concentration of the solution. A test kit comprising the active copper strips is also disclosed.Type: GrantFiled: October 19, 1998Date of Patent: November 14, 2000Inventor: Manfred J. Woog
-
Patent number: 6103727Abstract: This invention discloses compounds, and pharmaceutically acceptable salts thereof, useful in therapeutically and/or prophylactically treating patients with an illness. Such illnesses include cancer, and secondary infections caused by Pneumocystis carinii and Toxoplasmosis gondii in immunocompromised patients. The compounds themselves, methods of making these compounds, and methods of using these compounds are all disclosed.Type: GrantFiled: November 5, 1999Date of Patent: August 15, 2000Assignee: Duquesne University of the Holy GhostInventor: Aleem Gangjee
-
Patent number: 6090905Abstract: Mannich-derivatized polyphenolic compositions prepared by the reaction of a phenolic compound having at least two phenol rings with an aldehyde and an amphoteric compound having both a basic moiety and an acidic moiety are disclosed. Methods for utilizing such compositions in the control of stickie formation in papermaking are also disclosed.Type: GrantFiled: February 12, 1999Date of Patent: July 18, 2000Assignee: Calgon CorporationInventors: Walter A. Juzukonis, Shih-Ruey T. Chen
-
Patent number: 6090832Abstract: Aqueous dispersions of 2-(4-thiazolyl)-benzimidazole (TBZ), alone or in combination with 1,2-dibromo-2,4-dicyanobutane (DBDCB), and processes for making the same, are disclosed. These processes generally comprise mixing a xanthan gum with water, adding TBZ and mixing until uniform. DBDCB dispersions are prepared by mixing xanthan gum with water, adding DBDCB, maintaining the mixture at a temperature below about 40.degree. C., grinding the mixture and mixing until uniform. The TBZ and DBDCB dispersions are then blended to prepare a dispersion containing both active ingredients. A method for inhibiting microbial growth utilizing these dispersions is also claimed.Type: GrantFiled: July 31, 1995Date of Patent: July 18, 2000Assignee: Calgon CorporationInventors: David H. Bialosky, Jodi L. Martin
-
Patent number: 6080244Abstract: Compositions and methods for cleaning metal and non-metal surfaces utilizing a nonionic surfactant and an enzyme are disclosed. A composition comprised of at least one nonionic surfactant and at least one enzyme and having a pH of between 6 and 9.5 is specifically disclosed. A method for cleaning a surface using this composition, and a method for cleaning a surface using a first composition comprising at least one nonionic surfactant and a second composition comprising at least one enzyme are also disclosed.Type: GrantFiled: September 21, 1998Date of Patent: June 27, 2000Assignee: Calgon CorporationInventors: Christopher L. Wiatr, David Elliott
-
Patent number: 6077844Abstract: This invention discloses compounds, and pharmaceutically acceptable salts thereof, useful in therapeutically and/or prophylactically treating patients with an illness. Such illnesses include cancer, and secondary infections caused by Pneumocystis carinii and Toxoplasmosis gondii in immunocompromised patients. The compounds themselves, methods of making these compounds, and methods of using these compounds are all disclosed.Type: GrantFiled: March 5, 1999Date of Patent: June 20, 2000Assignee: Duquesne University of the Holy GhostInventor: Aleem Gangjee
-
Patent number: 6069142Abstract: Synergistic antimicrobial combinations comprising 4,5-dichloro-2-N-octyl-4-isothiazolin-3-one and a mixture of a chlorinated isocyanurate and a bromide compound are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.Type: GrantFiled: December 23, 1998Date of Patent: May 30, 2000Assignee: Calgon CorporationInventors: Tammy W. Gaffney, Christopher L. Wiatr
-
Patent number: 6066315Abstract: Novel conditioning polymers containing (meth)acrylamidopropyltrimethyl ammonium chloride, meth(acrylic acid) or 2-(meth)acrylamido-2-methylpropane sulfonic acid and, optionally, a C.sub.1 -C.sub.22 alkyl (meth) acrylate and the use thereof in a cosmetically acceptable medium for the treatment of a keratin-containing substrate are disclosed.Type: GrantFiled: September 24, 1998Date of Patent: May 23, 2000Assignee: Calgon CorporationInventors: Allan L. Melby, Nicholas F. Vozza, Richard LaMar, Gary F. Matz
-
Patent number: 5985934Abstract: Synergistic antimicrobial combinations consisting essentially of comprising 2,4,4'-trichloro-2'-hydroxydiphenyl ether and 1,2-dibromo-2,4-dicyanobutane are disclosed. Methods for inhibiting microbial growth using these synergistic antimicrobial combinations are also disclosed.Type: GrantFiled: April 22, 1996Date of Patent: November 16, 1999Assignee: Calgon CorporationInventors: Tammy W. Gaffney, Allan L. Melby
-
Patent number: 5972433Abstract: Methods for treating metal substrates are disclosed. These methods, which comprise contacting the surface to be treated with a composition comprising a Mannich-derivatized polyether, improve the corrosion resistance and/or adhesion properties of the treated surface. Similar methods for treating polymeric substrates are disclosed.Type: GrantFiled: December 5, 1997Date of Patent: October 26, 1999Assignee: Calgon CorporationInventors: Shih-Ruey Thomas Chen, Yi Jin Warburton, Hong Ding
-
Patent number: 5948270Abstract: A method for reducing turbidity in laundry waste water comprising the steps of treating said water with effective amounts of a first polymer comprised of a dialkyl diallyl ammonium halide containing (meth)acrylic acid moieties and a second anionic, nonionic or cationic acrylamide polymer is disclosed.Type: GrantFiled: March 1, 1996Date of Patent: September 7, 1999Assignee: Calgon CorporationInventor: Denis E. Hassick
-
Patent number: 5766585Abstract: The present invention relates to methods of therapeutic or prophylactic treatment of connective tissue diseases by systemic or local delivery of a nucleic acid sequence to a mammalian host. Expression of the nucleic acid sequence results in the systemic delivery of a biologically active protein or peptide which acts to antagonize inflammatory, hypertrophic and erosive phenomenon associated with connective tissue disease. Systemic delivery of such gene products results in sustained treatment of connective tissue diseases such as rheumatoid arthritis and systemic lupus erythematosus.Type: GrantFiled: August 20, 1996Date of Patent: June 16, 1998Assignee: University of Pittsburgh of the Commonwealth System of Higher EducationInventors: Christopher H. Evans, Paul D. Robbins
-
Patent number: 5736547Abstract: The invention discloses species compounds (4) and (5) and methods of using these compounds for therapeutically treating a patient for an illness selected from the group consisting of infection by Pneumocystis carinii and Toxoplasmosis gondii. ##STR1## In compounds (4) and (5) X and Y may be the same or different and are selected from the group consisting of OH and NH.sub.2 : A is selected from the group consisting of nitrogan, carbon and sulfur and B equals carbon when A is selected from the group consisting of sulfur, carbon and nitrogen, B equals nitrogen when A equals carbon and B equals sulfur when A equals carbon; R.sub.3 is one of either hydrogen or methyl except when attached to Nitrogen wherein R.sub.3 is zero; R.sub.4 is one of either a hydrogen or a first lower alkyl group except when A equals sulfur wherein R.sub.4 is zero; R.sub.1 is selected from the group consisting of hydrogen, nitroso group, aldehyde, a second lower alkyl group except when B is equal to sulfur wherein R.sub.1 is zero; and R.Type: GrantFiled: August 15, 1995Date of Patent: April 7, 1998Assignee: Duquesne University of the Holy GhostInventor: Aleem Gangjee
-
Patent number: 5711884Abstract: A method of making a solid filter material which filters a predetermined wavelength band from a broader spectrum of radiation is provided. The method includes creating a colloidal structure composed of particles dispersed within a medium, and introducing a solvent thereto. Thereafter, the solvent is evaporated and the remaining structure solidifies into a solid crystalline array. The particles can also be fused together by polymerization using one of several methods which are provided. In another embodiment, methods of filtering submicron particles have been developed which consists of establishing a gel membrane from a crystalline colloidal array with an interstice size less than or equal to the particles to be filtered are disclosed. The gel membrane may employ anisotropic interstices of submicron size and is stretchable or compressible mechanically.Type: GrantFiled: November 21, 1995Date of Patent: January 27, 1998Assignee: University of Pittsburgh of the Commonwealth System of Higher EducationInventors: Sanford A. Asher, Jay Henis
-
Patent number: 5665435Abstract: An improved method for the fluorination of a diamond surfaces comprises condensing a layer of perfluorinated alkyl iodides consisting of C.sub.n F.sub.2n+1 I (where n is a positive integer from 1 to 13) on the diamond surface, producing perfluorinated alkyl free radicals by photodecomposing C--I bonds of said perfluorinated alkyl iodides on the diamond surface, reacting the diamond surface with photochemically produced perfluorinated alkyl radicals thereby anchoring photochemically induced photofragments of the perfluorinated alkyl iodides to the diamond surface forming a perfluorinated alkyl layer, and decomposing the perfluorinated alkyl layer on the diamond surface to cause the fluorination of the diamond surface by atomic F. The method achieves greater than one fluorine atom per surface carbon atom chemisorbed on the diamond using C.sub.4 F.sub.9 I.Type: GrantFiled: August 31, 1995Date of Patent: September 9, 1997Assignee: University of Pittsburgh of the Commonwealth System of Higher EducationInventors: Vincent S. Smentkowski, John T. Yates, Jr.