Patents Represented by Attorney Hesna J. Pfeiffer

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  • Polyazo dyes containing the radical of a bis-coupling component, and process for their production
    Patent number: 5696242
    Abstract: The invention provides a compound of formulaA--E--SO.sub.2 --NH--SO.sub.2 --E--A (I),whereineach --E--, independently, signifies a bivalent aromatic radical,each --A, independently, signifies a heterocyclic group of formula ##STR1## and the group --R.sub.1 --R.sub.2 -- signifies a 2- or 3-membered bridging chain to form, together with the group ##STR2## to which it is bound, a 5- or 6-membered heterocycle, with the proviso that the carbon indicated by the asterisk * is capable of being coupled with a diazonium compound,or a mixture of compounds of formula (I), and the use thereof as (bis)coupling components for the production of azodyes and metal complexes, which are useful as dyes, especially for the dyeing of leather.
    Type: Grant
    Filed: August 2, 1995
    Date of Patent: December 9, 1997
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Jordi Berenguer Barra, Jose Rocas Sorolla
  • Apparatus and process for the continuous dyeing of mesh material
    Patent number: 5634226
    Abstract: A modified steamer (D) comprising a heatable conduit (5), through which a substrate (S) can be introduced into the steamer (D) so that the substrate (S) can be preheated directly prior to contact with the steam.
    Type: Grant
    Filed: September 27, 1995
    Date of Patent: June 3, 1997
    Assignee: Sandoz Ltd.
    Inventor: Christian Oschatz
  • Modified form of bis-1,4-[2'-(2",5"-dimethoxycarbonylphenylazo)-3'-oxobutyramido]benzene and process for its synthesis
    Patent number: 5616778
    Abstract: The compound of the formula ##STR1## having the following CIELAB values: L*=82.55a*=11.53b*=90.49C*=91.22 andH*=82.74.
    Type: Grant
    Filed: April 21, 1994
    Date of Patent: April 1, 1997
    Assignee: Sandoz Ltd.
    Inventors: J urgen Goldmann, Bansi L. Kaul
  • Textile treatment
    Patent number: 5571444
    Abstract: A textile treatment composition which comprises; a textile binding agent which forms a chemical bond with the outer layer of the textile according to the formula (Ia): ##STR1## and, a barrier agent which forms a chemical bond with the textile binding agent and which increases the surface tension of the textile. Methods for treating textiles with the treatment composition, and kits comprising the components are also provided.
    Type: Grant
    Filed: January 11, 1996
    Date of Patent: November 5, 1996
    Assignee: Invicta Group Industries Pty Ltd.
    Inventors: Arthur D. Fisher, Dieter Reinehr, Jorg Binz, Sven Strunk
  • Acidic monoazo dyestuffs
    Patent number: 5563249
    Abstract: Acidic monoazo dyestuffs of formula I ##STR1## and their salts wherein the symbols R.sub.1 to R.sub.6, which possess the significances given in claim 1. These dyestuffs are suitable for dyeing or printing textile material consisting of natural or synthetic polyamides.
    Type: Grant
    Filed: June 21, 1995
    Date of Patent: October 8, 1996
    Assignee: Sandoz Ltd.
    Inventor: Jacky Dore
  • Eimeria tenella 16S rDNA probes
    Patent number: 5563256
    Abstract: Unique species-specific Eimeria tenella DNA probes comprising divergent DNA sequences are disclosed. The probes are complementary to a small subunit ribosomal RNA gene of Eimeria tenella.
    Type: Grant
    Filed: May 12, 1992
    Date of Patent: October 8, 1996
    Assignee: Merck & Co., Inc.
    Inventors: Prasanta R. Chakraborty, Michael Dashkevicz, Alex Elbrecht, Scott D. Feighner, Paul A. Liberator, Helen Profous-Juchelka
  • Use of 4H-3,1-benzoxazin-4-one compounds to improve the light fastness of textile materials
    Patent number: 5560852
    Abstract: A method of improving the light fastness of textile materials using an aqueous dispersion of a compound of formula I, ##STR1## having a first (A) and a second (B) benzoxazine-4-one ring joined by a phenylene bridging member; a variable bond between the first benzoxazine-4-one ring (A) and the phenylene bridging member, said variable bond being meta- or para- to the bond between the second benzoxazine-4-one ring (B) and the bridging member; wherein each R.sub.1 is independently hydrogen, halogen, nitro, C.sub.1-2 alkyl, C.sub.1-4 alkoxy, carboxy, sulfonic acid, C.sub.1-3 alkylcarbonyl, benzoyl or C.sub.1-4 alkoxycarbonyl and; R.sub.2 is hydrogen, chlorine, bromine, methyl, C.sub.1-2 alkoxy, phenyl, hydroxy, nitro, carboxy or sulfonic acid.
    Type: Grant
    Filed: March 22, 1995
    Date of Patent: October 1, 1996
    Assignee: Sandoz Ltd.
    Inventor: Jean-Luc Mura
  • Process for the production of resist prints
    Patent number: 5554195
    Abstract: This invention relates to a process for the production of resist prints on two-dimensional textile materials, which is characterized by the steps of impregnating with a water-repellent those parts of one side of a textile piece which are to be given a resist effect, drying said textile piece and dyeing the textile piece by applying an aqueous liquor to the reverse side.
    Type: Grant
    Filed: June 1, 1995
    Date of Patent: September 10, 1996
    Assignee: Sandoz Ltd.
    Inventor: Georg Robert
  • Dyeing process and auxiliary
    Patent number: 5554199
    Abstract: Dyeing of cellulosic substrates with reactive dyes in the presence of at least 20 g/l of sodium chloride, employing auxiliaries (E) of levelling activity, which are methylene-bridge-containing and sulpho-group-containing aromatic compounds, obtainable by condensation of defined sulphonation products with formaldehyde resp. formaldehyde-yielding compounds and optionally salt formation; (E)-contaning compositions that further contain at least one hydrotrope (H) and/or at least one sequestering agent (Q); and novel condensation products.
    Type: Grant
    Filed: November 17, 1994
    Date of Patent: September 10, 1996
    Assignee: Sandoz Ltd.
    Inventor: Hans-Peter Baumann
  • Process for pretreating a textile material
    Patent number: 5538648
    Abstract: A process for improving the removal of undesired substances from a cellulosic textile material comprisingi) treating the textile material with an aqueous solution comprisinga) citric acid,b) an alkali metal or ammonium salt of a gluconic acid, andc) optionally a mineral acid (preferably in a minor amount).
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: July 23, 1996
    Assignee: Sandoz Ltd.
    Inventors: Dominik B ucheler, Saverio Fornelli
  • Aluminum etching
    Patent number: 5513766
    Abstract: Improvements in the etching of aluminum and aluminum alloys is obtained by etching the workpiece in a caustic etching bath in the presence of an anionic surfactant of the sulfate or sulfonate type. Satisfactory results are achieved with reduced amounts of dissolved aluminum.
    Type: Grant
    Filed: November 30, 1993
    Date of Patent: May 7, 1996
    Assignee: Sandoz Ltd.
    Inventors: Richard L. Ranieri, Pinakin Patel
  • Process for treating textile materials with enzyme containing compositions and high frequency fields
    Patent number: 5512060
    Abstract: A process for the treatment of a textile material comprisinga) applying evenly a liquor solution (hereinafter referred to as "the liquor") for performing the treatment to the material in such a manner that the dry weight uptake of the solution at the end of this step is no more than 200%;b) then passing the material into a high frequency field of 10-50 MHz for 1 to 120 seconds; andc) optionally maintaining the material at the temperature that the material reaches in the high frequency field for up to 15 minutes (preferably 1-5 minutes).
    Type: Grant
    Filed: May 12, 1995
    Date of Patent: April 30, 1996
    Assignee: Sandoz Ltd.
    Inventors: Saverio Fornelli, Illa Souren
  • Fibre-reactive copper-complex formazan compounds which contain a difluoropyrimidinyl group
    Patent number: 5491221
    Abstract: Fibre-reactive formazan compounds, salts thereof or free acid forms thereof according to formula (I) ##STR1## in which R.sub.1 is hydrogen or --COOH, each of R.sub.2 and R.sub.4 is independently hydrogen, --COOH, --SO.sub.3 H, --NHCOCH.sub.3, --NHCOCHY.sub.2 --CH.sub.2 Y.sub.1, --NHCOCY.sub.2 .dbd.CH.sub.2 or --NHCOCH.sub.2 Y.sub.1,R.sub.3 is hydrogen, halogen, C.sub.1-4 alkyl, C.sub.1-4 alkoxy, --COOH or --SO.sub.3 H,Y.sub.1 is chlorine, bromine, --OSO.sub.3 H or --SSO.sub.3 H,Y.sub.2 is hydrogen, chlorine or bromine, andZ is ##STR2## The compounds are particularly useful in dyeing or printing hydroxy-group containing or nitrogen-containing organic substrates, including leather, fiber materials, and textiles.
    Type: Grant
    Filed: May 20, 1994
    Date of Patent: February 13, 1996
    Assignee: Sandoz Ltd.
    Inventors: Markus Gisler, Roland Wald
  • Eimeria praecox 16S rDNA probes
    Patent number: 5449768
    Abstract: Unique species-specific Eimeria praecox DNA probes comprising divergent DNA sequences are disclosed. The probes are complementary to a small subunit ribosomal RNA gene of Eimeria praecox.
    Type: Grant
    Filed: May 12, 1992
    Date of Patent: September 12, 1995
    Assignee: Merck and Co., Inc.
    Inventors: Prasanta R. Chakraborty, Michael Dashkevicz, Alex Elbrecht, Scott D. Feighner, Paul A. Liberator, Helen Profous-Juchelka
  • Child resistant blister package
    Patent number: 5437371
    Abstract: There is disclosed a child resistant blister package comprising a conventional blister package having cavities containing unit doses of medication. The blister package is adapted to receive a locking member which is slidably secured to the blister package to effectively prevent children from accessing the medication therein and yet is readily, slidably removed from the blister package by an adult to access medication therefrom.
    Type: Grant
    Filed: May 10, 1994
    Date of Patent: August 1, 1995
    Assignee: Merck & Co., Inc.
    Inventor: Gilbert Lataix
  • Fluid dispensing device with gravity-fill continuously variable dosage selection
    Patent number: 5392966
    Abstract: A device is provided for controlled dispensing of a variable measured quantity of fluid from a container. The device has a dosage cup chamber adapted to hold a measured quantity of fluid when the container is inverted and righted. This fluid is then dispensed from the chamber through a valved conduit.
    Type: Grant
    Filed: January 18, 1994
    Date of Patent: February 28, 1995
    Assignee: Merck & Co., Inc.
    Inventor: Leonid Bunin
  • Packaging vial for a liquid product in particular medicinal or cosmetic
    Patent number: 5390822
    Abstract: Packaging vial for a liquid product in particular medicinal or cosmetic, manufacturing process and device for use of this vial. The vial includes a flexible casing (1), coupled to a rigid support (2), the casing (1) consisting of a pocket (10) with thin and distortable walls, containing the product and free from air, as well as a tubular nozzle (11) for dispensing the product, to which is coupled the pocket (10), the vial including furthermore a pump for dosing and delivering the product, said pump containing a fixed body inserted into the nozzle (11) and a moveable actuating member which is located inside the casing, but Which can be moved from the outside of the latter thanks to the distortable character of its wall which, proximate the actuating member, has the shape of a bellows.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: February 21, 1995
    Assignee: Merck & Co., Inc.
    Inventor: Gilbert Lataix
  • Process for the preparation of 1-[3-acetylthio-2(s)-methylpropanoyl]-l-proline
    Patent number: 5387697
    Abstract: The intermediate 1-[3-acetylthio-2(s)-methylpropanoyl]-1-proline is prepared by reacting L-proline with (R)-3-acetylthio-2-methyl propanoyl chloride at 0-5.degree. C., with pH controlled at 7.5-8.5, using 2.5M potassium hydroxide and potassium phosphate buffer, which gives >97% pure material after crystallizing from the reaction mixture.
    Type: Grant
    Filed: June 13, 1994
    Date of Patent: February 7, 1995
    Assignee: Merck & Co., Inc.
    Inventor: Azucena C. Hen
  • Protein-dimeric polysaccharide conjugate vaccine
    Patent number: 5371197
    Abstract: A conjugate immunogen, having polysaccharide moieties derived from bacterial sources, provides a multivalent vaccine with a low protein to polysaccharide ratio. The vaccine reduces complications associated with injection of protein immunogens due to pyrogenic responses, such as swelling and pain, and is particularly suitable for administration to infants.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: December 6, 1994
    Assignee: Merck & Co., Inc.
    Inventors: Stephen Marburg, Richard L. Tolman
  • Single use fluid dispensing container
    Patent number: D359680
    Type: Grant
    Filed: January 25, 1994
    Date of Patent: June 27, 1995
    Assignee: Merck & Co., Inc.
    Inventor: Arthur L. Lifshey