For Laboratory Or Pharmaceutical Glassware Patents (Class 510/179)
  • Patent number: 9394506
    Abstract: Compositions and methods for cleaning hard surfaces are disclosed herein. More particularly, the present disclosure relates to cleaning compositions that can be used in automotive applications for removing organic soils that accumulate on automotive surfaces without causing surface paint damage.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: July 19, 2016
    Assignee: Prestone Products Corporation
    Inventors: Thomas G. Kalagher, Colin Dilley, Joseph Matthews
  • Publication number: 20150099681
    Abstract: The present invention relates to compositions comprising a plant material and methods for using the same. The methods include extracting or removing a substance from a substrate, or remediating a substrate from a substance. The substance can comprise a hydrocarbon-containing substance, a protein, lipid, wax, fatty acid or fatty alcohol, or a combination thereof.
    Type: Application
    Filed: October 13, 2014
    Publication date: April 9, 2015
    Applicant: GreenStract, LLC
    Inventor: Peter Rehage
  • Patent number: 8969277
    Abstract: An object of the invention is to remove effectively metallic contaminants adhering to the glass substrate surfaces without increasing roughness of the glass substrate surfaces in the glass substrate for a magnetic disk. In a manufacturing method of a glass substrate for a magnetic disk having a cleaning step of the glass substrate, the cleaning step comprising a cleaning treatment of contacting the glass substrate with an alkaline aqueous solution having a gluconate in concentration of not less than 0.05 wt % and not more than 2 wt % added thereto and a pH of not less than 9 and not more than 11 is appended.
    Type: Grant
    Filed: March 31, 2011
    Date of Patent: March 3, 2015
    Assignee: Hoya Corporation
    Inventors: Takuhiro Hirakawa, Yasunari Hirano, Kouichi Tamoto, Tomoyuki Yamaguchi
  • Patent number: 8969275
    Abstract: The aqueous alkaline cleaning composition comprising (A) at least one thioamino acid having at least one secondary or tertiary amino group and at least one mercapto group and (B) at least one quaternary ammonium hydroxide; the use of the alkaline cleaning composition for the processing of substrates useful for fabricating electrical and optical devices; and a method for processing substrates useful for fabricating electrical and optical devices making use of the said aqueous alkaline cleaning composition.
    Type: Grant
    Filed: June 24, 2010
    Date of Patent: March 3, 2015
    Assignee: BASF SE
    Inventors: Raimund Mellies, Andreas Klipp
  • Publication number: 20150038389
    Abstract: Cleaning compositions and methods of making and using the same are provided. The cleaning compositions of the present invention may include at least one alkyl 3-hydroxybutyrate and water, optionally including at least one surfactant and one or more additional additives. The cleaning compositions of the present invention, which are non-toxic and environmentally benign, can be useful to remove many types of soils from a range of different substrates in a variety of domestic, industrial, and/or institutional applications.
    Type: Application
    Filed: August 2, 2013
    Publication date: February 5, 2015
    Applicant: Eastman Chemical Company
    Inventors: Jos Simon De Wit, Mark Stanley Pavlin
  • Patent number: 8506723
    Abstract: An alkaline detergent composition for hard surface comprises an alkaline agent (component A), a nonionic surfactant (component B), a chelating agent (component C), water (component D), at least one carboxylic acid compound (component E) selected from the group consisting of compounds represented by general formula (1) and general formula (2), and at least one anionic surfactant (component F) selected from the group consisting of surfactants represented by general formula (3) and salts thereof. Therein, the content ratio [component E (weight %)/component B (weight %)] is 1/1.5-15/1, the content ratio [component F (weight %)/component B (weight %)] is 10/1-1/5, and the pH at 25° C. is 12 or greater.
    Type: Grant
    Filed: December 27, 2010
    Date of Patent: August 13, 2013
    Assignee: KAO Corporation
    Inventors: Atsushi Tamura, Sadaharu Miyamoto
  • Patent number: 8420584
    Abstract: A non-toxic enzymatic detergent for use in cleaning surgical instruments and the like which have a large build-up of bio-residue thereon and which need specialty cleaning in order to avoid both hardened bio-residue and certain fluid traces from the instruments for both operating accuracy as well as sterilization requirements.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: April 16, 2013
    Inventors: Melton Sherwood Thoele, Alex Ladato
  • Publication number: 20120094886
    Abstract: The aqueous alkaline cleaning composition comprising (A) at least one thioamino acid having at least one secondary or tertiary amino group and at least one mercapto group and (B) at least one quaternary ammonium hydroxide; the use of the alkaline cleaning composition for the processing of substrates useful for fabricating electrical and optical devices; and a method for processing substrates useful for fabricating electrical and optical devices making use of the said aqueous alkaline cleaning composition.
    Type: Application
    Filed: June 24, 2010
    Publication date: April 19, 2012
    Applicant: BASF SE
    Inventors: Raimund Mellies, Andreas Klipp
  • Patent number: 8114223
    Abstract: A cleaning agent for hard surfaces, which is made of a combination of at least one alkyl pyrrolidone, at least one glycol ether, and at least one anionic surfactant, exhibits very good cleaning power and cleaning speed for dirt of different kinds and can be utilized particularly for cleaning glass.
    Type: Grant
    Filed: September 4, 2009
    Date of Patent: February 14, 2012
    Assignee: Henkel AG & Co. KGaA
    Inventors: Erik Brueckner, Juergen Noglich, Stefan Karsten
  • Patent number: 7879786
    Abstract: A detergent composition is disclosed, which comprises: (A) an alkali metal hydroxyl compound in an amount of 0.1 to 20 parts by weight; (B) a nonionic surfactant represented by the following formula (I) in an amount of 0.1 to 30 parts by weight: wherein R1 is hydrogen or methyl; R2 is hydrogen or methyl; n is an integer from 0 to 10; and m is an integer from 4 to 20; (C) an anionic surfactant in an amount of 0.1 to 10 parts by weight; (D) a chelating agent in an amount of 0.1 to 20 parts by weight; (E) an additive in an amount of 0.1 to 20 parts by weight; and (F) water of remaining parts based on 100 parts by weight of the detergent composition.
    Type: Grant
    Filed: August 24, 2010
    Date of Patent: February 1, 2011
    Assignee: Everlight USA, Inc.
    Inventors: Yung-Hsiang Bai, Yu-Fen Liao, Yi-Jin Chen, Yen-Cheng Li
  • Patent number: 7838481
    Abstract: A formaldehyde-free cleaner composition and method of use for maintaining a blood analyzer are disclosed. The cleaner composition includes surfactants, a proteolytic enzyme, non-formaldehyde releasing antimicrobials, alkaline metal salts, and a buffer. The cleaner composition has a pH in a range from about 7 to about 12 and a formaldehyde concentration equal or less than 1 ppm.
    Type: Grant
    Filed: April 7, 2006
    Date of Patent: November 23, 2010
    Assignee: Beckman Coulter, Inc.
    Inventors: Mirta I. Riesgo, Carlos S. Rubio, Susana M. Maldonado
  • Patent number: 7741261
    Abstract: A cleaning composition contains all natural ingredients and is both environmentally safe and hypoallergenic. One embodiment of natural glass cleaner contains white vinegar, natural aloe vera gel, fresh rosemary, filtered water, pure eucalyptus oil, lauryl glucoside, green food color, and a preservative. One embodiment of natural scrub wash multi-purpose cleaner contains lemon juice, fresh rosemary, lauryl glucoside, filtered water, fresh peppermint and a preservative. One embodiment of natural shine furniture cleaner contains lemon juice, extra virgin olive oil, pure orange oil, pure lemon oil, pure eucalyptus oil, filtered water, and a preservative.
    Type: Grant
    Filed: June 2, 2009
    Date of Patent: June 22, 2010
    Inventor: Ivania Guerrero
  • Patent number: 7737106
    Abstract: A process for making ionic liquids containing ion actives, which provide fabric treating benefits, surface treating benefits and/or air treating benefits. The ionic liquid is made from an ion active feedstock and an ionic liquid forming counterion feedstock, which preferably comprises another ion active.
    Type: Grant
    Filed: November 14, 2006
    Date of Patent: June 15, 2010
    Assignee: The Procter & Gamble Company
    Inventors: Corey James Kenneally, Stacie Ellen Hecht, Scott Leroy Cron
  • Publication number: 20100126524
    Abstract: The disclosure provides mixed acid solutions for cleaning a vessel, such as a vessel used for growing a GaAs crystal, comprising nitric acid, hydrofluoric acid and water. Further, the disclosure also provides exemplary methods for cleaning a vessel for growing a GaAs crystal, by: a) immersing the vessel in a mixed acid solution; b) immersing the vessel in an ammonia solution; c) cleansing the vessel with a surfactant solution under supersonic vibration; and d) cleansing the vessel with deionized water under supersonic vibration.
    Type: Application
    Filed: October 19, 2009
    Publication date: May 27, 2010
    Inventor: Guoming Fan
  • Patent number: 7531490
    Abstract: The present invention relates to a detergent composition containing (a) 2 to 30% by weight of an inorganic alkali, (b) 0.5 to 20% by weight of at least one surfactant selected from an anionic surfactant and a nonionic surfactant, (c) 0.01 to 2% by weight (based on calcium ion) of a calcium salt, (d) 0.1 to 15% by weight of a calcium ion-sequestering agent, (e) 1 to 30% by weight of a water-soluble organic solvent and (f) 20 to 95% by weight of water.
    Type: Grant
    Filed: September 29, 2005
    Date of Patent: May 12, 2009
    Assignee: Kao Corporation
    Inventors: Junji Kondo, Yasunori Horio
  • Publication number: 20080242576
    Abstract: A probe cleaning sheet for removing foreign objects attached to tip part of a probe is formed with a plastic sheet having a flat and even surface and a uniform thickness and a cleaning layer with a flat and even surface and a uniform thickness formed on the surface of this plastic sheet. The cleaning layer has viscoelastic properties. Its Young's modulus is 30 MPa or more and 700 MPa les less, its storage modulus at 25° C. is 1.2×108 dyn/cm2 or more and 1.2×109 dyn/cm2 or less, and the value of its storage modulus at 25° C. is 1.2 or more and 3.0 or less times the value of its storage modulus at 150° C.
    Type: Application
    Filed: August 3, 2007
    Publication date: October 2, 2008
    Inventors: Jun Tamura, Toshihiro Kobayashi, Jun Watanabe
  • Patent number: 7258834
    Abstract: Methods and compositions for modifying a substrate surface are provided. In accordance with the subject methods, a substrate surface is contacted with a particulate-containing fluid. The fluid is then ultrasonically or sonically agitated to modify the substrate surface. In certain embodiments, the particulate-containing fluid has a pH above the isoelectric point of the substrate. Also provided are devices capable of providing ultrasonic and/or sonic energy and which include a non-acidic, particulate-containing fluid. The subject invention also provides systems and kits for use in practicing the subject methods.
    Type: Grant
    Filed: August 1, 2003
    Date of Patent: August 21, 2007
    Assignee: Agilent Technologies, Inc.
    Inventors: John F. McEntee, Michel G. M. Perbost, Joseph Vandenburg
  • Patent number: 7211552
    Abstract: A non-toxic enzymatic detergent for use in cleaning surgical instruments and the like which have a large build-up of bio-residue thereon and which need specialty cleaning in order to avoid both hardened bio-residue and certain fluid traces from the instruments for both operating accuracy as well as sterilization requirements.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: May 1, 2007
    Inventor: Melton Sherwood Thoele
  • Patent number: 6984612
    Abstract: An automotive headlight restorer and cleaner which removes oxidation and yellow haziness and restores optical clarity. The method of manufacture consists of several solutions. Solution A, which is an industrial degreasing compound, diluted to 1:20. Solution B1 is a mixture of 53%–56% mineral spirits, 1%–3% butanol, and gloss spar varnish and/or acrylic urethane. Solution B1 is used on lenses with heavy oxidation and severe damage. It will improve them greatly, but not restore them to like new clarity. Solutions B2 and C are for lenses with less severe oxidation and damage (the majority of lenses fit in this category.) Solution B2 is a fine cut cleaner (a professional quality rubbing compound of low abrasive content with diminishing abrasiveness). Solution C is a combination wax, polish, sealer. This solution protects against future damage to the lenses.
    Type: Grant
    Filed: February 5, 2004
    Date of Patent: January 10, 2006
    Inventor: David Francis Maillie
  • Patent number: 6946432
    Abstract: The anti-foaming preparations comprise aqueous formulations, which contain at least one substance, from the group of polyhydroxy compounds, non-ionic detergents and phosphoric acid esters and their salts, preferably alkyl polygluocosides, alkoxylated long-chain alcohols and an alkali salt of a phosphoric acid partial-ester. The particular advantage of said aqueous formulations is that they are stable when included in highly alkaline cleaning concentrates.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: September 20, 2005
    Assignee: Ecolab GmbH & Co. OHG
    Inventors: Siegfried Bragulla, Peter Schwarz
  • Patent number: 6939836
    Abstract: The invention relates to an aqueous composition comprising in combination an alkyl pyrrolidone, such as a C8-C18 linear alkyl pyrrolidone, and an alkyl polysaccharide such as an alkyl polyglucoside, and a method of .enhancing the efficacy of an enzyme containing composition for use in cleaning medical instruments comprising the step of including in said composition an alkyl pyrrolidone and an alkyl polysaccharide. The methods and compositions of the present invention may further include at least one enzyme such as proteases, lipases, amylases, and cellulases.
    Type: Grant
    Filed: February 27, 2003
    Date of Patent: September 6, 2005
    Assignee: Novapharm Research (Australia) Pty Ltd
    Inventors: Steven Kritzler, Alex Sava
  • Patent number: 6881711
    Abstract: The present invention relates generally to compositions and methods for cleaning hard surfaces. More particularly, the present invention relates to cleaning compositions which can be used in automotive applications for removing organic soils that accumulate on automotive surfaces without causing surface paint damage. Such cleaning compositions of the present invention are environmentally safe and contain no or low amounts of volatile organic compounds.
    Type: Grant
    Filed: October 26, 2001
    Date of Patent: April 19, 2005
    Assignee: Prestone Products Corporation
    Inventors: Aleksei V. Gershun, Mark V. Alexander, Colin M. Dilley
  • Publication number: 20030073071
    Abstract: Measurements relating to the activity of various molecules of interest are obtained using a sensing surface with an associated first charge, a charge-regulating layer bound to the sensing surface, various possible probe molecules and a measurement circuit. The sensing surface has a layer bound to it that confers a neutral charge or a second charge on a net basis. In addition, a probe is bound to at least one of the surface and the layer, the probe being complementary to and interacting with a molecule of interest. The interaction between the probe and the molecule of interest is detected electrically.
    Type: Application
    Filed: July 23, 2002
    Publication date: April 17, 2003
    Inventors: Jurgen Fritz, Emily Cooper, Scott Manalis
  • Publication number: 20020183220
    Abstract: The present invention is directed to the discovery that addition of a specific combination of components can significantly reduce the adverse impact of the caustic wash solution on the bottle surface of bottles being washed for reuse without compromising the cleaning activity of the wash solutions. It was discovered that the addition of a combination of a polycarboxylic acid and a phosphonic acid to a caustic wash solution significantly decreases the weight loss observed in glass bottles being subjected to a caustic wash procedure.
    Type: Application
    Filed: April 23, 2001
    Publication date: December 5, 2002
    Inventors: Francesco Falsina, William G. Cleuren
  • Patent number: 6420326
    Abstract: The present invention relates to an aqueous, liquid hard surface detergent composition having excellent surface lubricity and filming/streaking characteristics. Said composition comprises less than about 1%, by weight of the composition, of surfactant to provide lubricity, preferably straight chain alkyl sulfate wherein at least about 30%, preferably wherein more than about 50%, of said surfactant, by weight, has a C12 or C14 chain length or mixtures thereof; hydrophobic cleaning solvent; an optional substantive material that increases the hydrophilicity of the glass; and preferred low level of alkaline buffering agent to provide composition stability on storage and alkalinity, without diminishing the lubricity.
    Type: Grant
    Filed: February 11, 2000
    Date of Patent: July 16, 2002
    Assignee: The Procter & Gamble Company
    Inventors: Michael Stephen Maile, Alan Edward Sherry
  • Patent number: 6367487
    Abstract: A novel anti-etch and cleaning solution is described. The solution comprises a hetero functionalized polymer, caustic and optionally, an anti-etch component and unexpectedly results in glassware that is substantially free of contaminants and etching after washing.
    Type: Grant
    Filed: August 11, 1999
    Date of Patent: April 9, 2002
    Assignee: Diversey Lever, Inc.
    Inventors: Carol Anne Rouillard, Charles Allen Crawford, David Cole, Michael Howell
  • Patent number: 6299701
    Abstract: A detergent composition containing alkali-metal silicate with an average molar ratio of SiO2/M2O of 1-4.2, preferably 2.5-4.2, wherein M is an alkali metal, the composition being non-corrosive to glass, crystal, porcelain and decorative prints thereon upon repeated washing. The composition being such that when disposed in a washing medium at a normal working concentration, a protonated silicic monomer Si(OH)4 is produced in a concentration of at least 2.5×10−3 mol/liter of the washing medium.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: October 9, 2001
    Assignee: Rhone-Poulenc Chimie
    Inventors: Eric Aubay, Agnès Froute, Aude Guirauden, Daniel Joubert
  • Patent number: 6281178
    Abstract: Disclosed are aqueous hard surface cleaning compositions comprising detergent surfactant and, optionally, detergent builder and a hydrotrope in an amount sufficient to prevent filming and/or streaking after a surface is cleaned with the compostions.
    Type: Grant
    Filed: October 1, 1999
    Date of Patent: August 28, 2001
    Assignee: Stepan Company
    Inventors: Irma Ryklin, Arshad Malik
  • Patent number: 6232280
    Abstract: A cleaning composition includes a detectable substance which is relatively stable in the cleaning composition, for indicating whether the cleaning composition has been thoroughly removed from a vessel following a cleaning process. For pharmaceutical applications, the detectable substance is preferably a low-foaming surfactant that is detectable by high performance liquid chromatography at concentrations of around 10 ppm, or less. The surfactant is thus detectable in the same analytical procedure as are traces of pharmaceutical residues which have not been removed from the vessel. The analytical procedure is used to develop a cleaning protocol for future cleaning processes by determining the number of rinses needed for reducing the surfactant, and hence the cleaning product, and also the pharmaceutical residues, in the rinse water to predetermined acceptable levels.
    Type: Grant
    Filed: May 12, 1999
    Date of Patent: May 15, 2001
    Assignee: Steris Corporation
    Inventors: Sayed Sadiq Shah, Herb J. Kaiser, Shahin Keller
  • Patent number: 6169066
    Abstract: Waterborne hydrophobic cleaning and coating compositions of this invention are prepared by combining one or more silicone ingredient, with water, and at least one solubilizing agent capable of making the silicone ingredient miscible in water to form a homogeneous mixture. Optionally, cleaning and costing compositions of this invention can include volatilizing agents, to reduce application time, and colorizing agents, to provide a desired composition color. The silicone ingredient can be selected from the group of silicone resins, silicone oils, and mixtures thereof. Preferably, the silicone ingredient comprises a functional group that is capable of forming a bond with a chemical group of the underlying substrate. Preferably, the solubilizing agent is one that is selected from the group consisting of organic solvents, alcohols, ketones, acetates, ethers, esters, aromatics, and mixtures thereof that are soluble in water and that are capable of cleaning a substrate surface.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: January 2, 2001
    Assignee: Ameron International Corporation
    Inventor: Roland L. Gasmena
  • Patent number: 6130197
    Abstract: A hard surface cleaner comprises (a) one or more alkyl or alkenol ethoxylated amides, (b) a glycol ether or a C.sub.6 -C.sub.11 alcohols, and (c) optionally, an anti-static agent.
    Type: Grant
    Filed: April 30, 1999
    Date of Patent: October 10, 2000
    Assignee: Reckitt & Colman Products Limited
    Inventors: David Bedford, Susan Wigley
  • Patent number: 6042749
    Abstract: A mixed solvent composition comprising dichloropentafluoropropane and at least one component selected from the group consisting of 1,1,1,2,3,4,4,5,5,5-decafluoropentane and perfluorohexane as the essential components, or a mixed solvent composition comprising dichloropentafluoropropane, an alcohol and at least one component selected from the group consisting of 1,1,1,2,3,4,4,5,5,5-decafluoropentane and perfluorohexane.
    Type: Grant
    Filed: June 5, 1998
    Date of Patent: March 28, 2000
    Assignee: AG Technology Co., Ltd.
    Inventors: Kenroh Kitamura, Michino Ikehata, Masaaki Tsuzaki
  • Patent number: 5954891
    Abstract: A detergent composition for removing resinous stains including (a) an aromatic compound represented by the general formula (1); and (b) an alkylene oxide compound represented by the general formula (2); and optionally including (c) an alkali metal hydroxide; and (d) water.
    Type: Grant
    Filed: January 8, 1998
    Date of Patent: September 21, 1999
    Assignee: Kao Corporation
    Inventors: Junji Kondoh, Eiji Kashihara
  • Patent number: 5942481
    Abstract: The caustic cleaner of the present invention has a freezing point of no more than about 40.degree. F. The caustic cleaner is a mixture of aqueous sodium hydroxide and an organic salt derived from the reaction of sodium hydroxide and gluconic acid at elevated temperatures.
    Type: Grant
    Filed: June 12, 1997
    Date of Patent: August 24, 1999
    Assignee: Charvid Limited Liability Co.
    Inventor: Charles Bullick Talley
  • Patent number: 5858941
    Abstract: The invention is a method of removing soils containing oils and fats from food processing surfaces. The method includes the steps of formulating a wash composition from a two-part concentrate. The concentrate first part includes a source of alkalinity and water. The concentrate second part includes a quaternary ammonium compound. After formulation, the wash composition has a major portion of water, from about 100 ppm to 20,000 ppm of quaternary ammonium compound, and an alkali source present in a concentration to provide a pH of from about 10 to 14. After formulation, the wash composition may be used by applying it to the food processing surface. Optionally, the wash composition may also include a chelating agent and a second nonionic or anionic detersive agent.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: January 12, 1999
    Assignee: Ecolab Inc.
    Inventors: Thomas R. Oakes, Timothy A. Gutzmann, Cynthia Lee Ross, Bruce E. Schmidt
  • Patent number: 5849095
    Abstract: Chemical etching of bottles in a bottle washer is minimized by soaking the bottles in a highly caustic composition which does not include any phosphorus compounds, ethylene diamine tetraacetic acid or nitrilotriacetic acid. The soaking composition includes the sodium hydroxide dissolved in water, in combination with polycarboxylic acid crystal growth inhibitors. Preferably, the soaking solution further includes a nonionic surfactant such as an alkyl polyglucoside, as well as a chelant such as a gluconate, glucoheptonate, or boroheptonate. The soaking solution can be added by either combining a liquid or powder built detergent composition which also forms a portion of the present invention or, alternately, an additive package, not including the sodium hydroxide, can be added. These compositions effectively clean the bottles and significantly reduce the dissolution of the glass which can, in turn, cause a hazing and weight loss.
    Type: Grant
    Filed: April 11, 1997
    Date of Patent: December 15, 1998
    Inventor: Carol Rouillard
  • Patent number: 5827454
    Abstract: A mixed solvent composition, for cleaning electronic components, which consists essentially of dichloropentafluoropropane and 1,1,1,2,3,4,4,5,5,5-decafluoropentane.
    Type: Grant
    Filed: January 18, 1996
    Date of Patent: October 27, 1998
    Assignee: AG Technology Co., Ltd.
    Inventors: Kitamura Kenroh, Ikehata Michino, Tsuzaki Masaaki
  • Patent number: 5804541
    Abstract: A floor stripper composition is provided, having a pH-value above 9.0, and comprising a soap, water and a glycine-N,N-diacetic acid compound, which is preferably methylglycine diacetic acid (MGDA). The diacetic acid is desirably in the form of a divalent metal complex thereof. A process is also provided for removing a zinc containing acrylate polymer film from a floor surface, wherein a floor stripper composition of the invention is applied. A good floor stripper performance could be obtained with this composition owing to its low foaming behaviour.
    Type: Grant
    Filed: June 19, 1997
    Date of Patent: September 8, 1998
    Assignee: Diversey Lever, Inc.
    Inventor: Josef Jans
  • Patent number: 5789252
    Abstract: A body fluid sample and a reagent are reacted in a reaction container, and after measuring the reaction solution the reaction solution is discharged from the reaction container. The vacant reaction container is washed by charging a detergent solution containing plural kinds of surface active agents through a nozzle of a washing mechanism. The detergent solution is a mixed solution containing polyoxyethylene alkyl ether, polyoxyethylene polyoxypropylene glycol ether, N-acyl amino acid salt and polyacrylic salt. By the washing method in accordance with the present invention, it is possible to eliminate bad effects due to incomplete washing of reaction containers in an apparatus for automatically successively analyzing biological samples.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: August 4, 1998
    Assignees: Hitachi, Ltd., Hitachi Instruments Engineering Co., Ltd.
    Inventors: Hiroko Fujita, Mitsuo Hattori, Emi Murakami, Yasuhisa Shibata
  • Patent number: 5759618
    Abstract: A coating composition of an alkoxy silane reacted with the surface of a glass substrate and a cleaning composition and method for cleaning said glass area is disclosed. The coating provides water repellency, durability and ease of cleaning to a glass or other siliceous surface. The coating is formed by applying an excess of an alkoxy solution containing a sulfuric acid to a glass surface with an excess of solution being applied. Preparatory to such coating application, the glass, especially if its surface is a weathered (non-virgin) surface, is cleaned vigorously with a cleaning solution containing water, phosphoric acid, hydrofluoric acid and sulfuric acid.
    Type: Grant
    Filed: February 27, 1997
    Date of Patent: June 2, 1998
    Assignee: Diamond Seal, Inc.
    Inventor: George S. Taylor