Patents Represented by Attorney, Agent or Law Firm Victoria M. Malia
-
Patent number: 6226084Abstract: The invention relates to a method of calibrating an optical system, the system comprising a flash lamp as a light source (4), a lens system (6), a monochromator comprising a grating (10), a motor (20) for displacing the grating so as to enable scanning essentially monochromatic light over a detection system. The light source provides at least two high intensity peaks at distinct wavelengths. The method comprises scanning a first wavelength region comprising at least one of said at least two high intensity peaks, and measuring the intensities at a selected number of points during the scan. A first of said at least two peaks is coarsely located. A wavelength region around each of said at least two peaks is scanned, measuring the intensities at closer intervals than previously. At least two peaks are located by autocorrelation. The location of said peaks is determined in terms of a distance from a reference point, said distance corresponding to said displacement of the grating.Type: GrantFiled: December 29, 1998Date of Patent: May 1, 2001Assignee: Amersham Pharmacia Biotech ABInventor: Stig Tormod
-
Patent number: 6173603Abstract: A cassette is used with a chemical immobilization and treatment system. The system with the cassette performs various complex chemistries with minimal human intervention, near-zero dead volume, and flow-through protocols pursuant to a predetermined instruction set encoded on a multiple-address chemical treatment cassette assembly. The cassette assembly comprises a plurality of analyte sample columns (“mini-columns”), having a high-pressure interface capability to permit direct insertion of the mini-column into a high-pressure solvent line for use as a support column for HPLC analysis. A sample loader loads analyte samples either singly or simultaneously into the multiple, addressable mini-columns without the need to load the sample funnel/column assembly into a separate reaction chamber.Type: GrantFiled: September 3, 1998Date of Patent: January 16, 2001Assignee: Amersham Pharmacia Biotech ABInventor: Marcus J. Horn
-
Chemical treatment station for use with cassette having individually addressable sample mini-columns
Patent number: 6168760Abstract: This invention is directed to a cassette chemical chemical treatment station. The system with the cassette performs various complex chemistries with minimal human intervention, near-zero dead volume, and flow-through protocols pursuant to a predetermined instruction set encoded on a multiple-address chemical treatment cassette assembly. The cassette assembly having a high pressure interface capability to permit direct insertion of the mini-column into a high-pressre solvent line for use as a support column for HPLC analysis. A sample loader loads analyte samples either singly or simultaneously into the multiple, addressable mini-columns without the need to load the sample funnel/column assembly into a separate reaction chamber.Type: GrantFiled: February 25, 1999Date of Patent: January 2, 2001Assignee: Amersham Pharmacia Biotech ABInventor: Marcus J. Horn -
Patent number: 6113766Abstract: The present invention involves a gel strip carrier module for a gel strip that reduces the handling of the gel strip and the hands-on-time during preparation of the gel strip for isoelectric focusing. The gel carrier module includes a gel strip chamber that serves as both a rehydration and focusing chamber, and allows the sample to be applied either throughout the entire gel or in a defined zone. The gel carrier module includes a pair of electrodes near opposite ends of the chamber that the gel strip rests on, gel side facing down. The gel carrier module includes a cover with hold-down blocks or pressure blocks to assure reliable, light contact between the gel and the electrodes during focusing. A rehydration buffer is added into the chamber, and the gel strip is gently placed in the chamber, gel side down, for rehydration.Type: GrantFiled: June 9, 1998Date of Patent: September 5, 2000Assignee: Hoefer Pharmacia Biotech, Inc.Inventors: Urs Steiner, Mohammed Rezaul Islam, Eric R. Hungerman
-
Patent number: 6110340Abstract: The present invention involves a gel casting and electrophoresis device that simplifies the gel cassette casting and electrophoresis process by providing an integral frame assembly that includes a bottom sealing means movable to a first position where the sealing means seals the bottom of the gel cassette for gel casting purposes and a second position which exposes the bottom of the gel cassette for electrophoresis purposes.Type: GrantFiled: May 13, 1998Date of Patent: August 29, 2000Assignee: Hoefer Pharmacia Biotech, Inc.Inventors: Timothy O. Lau, Urs Steiner, Eric Coates, Thomas S. Acampora
-
Patent number: 6013704Abstract: There are described compounds of formula A whereinr.sub.1 and r.sub.2 are each independently of the other 0 or 1;Y.sub.1 to Y.sub.9 are each independently of the others --H, --OH, C.sub.1 -C.sub.20 alkyl, C.sub.4 -C.sub.20 cycloalkyl, C.sub.2 -C.sub.20 -alkenyl, C.sub.1 -C.sub.20 alkoxy, C.sub.4 -C.sub.12 cycloalkoxy, C.sub.2 -C.sub.20 alkenyloxy, C.sub.7 -C.sub.20 aralkyl, halogen, --C.tbd.N, C.sub.1 -C.sub.5 haloalkyl, --SO.sub.2 R', --SO.sub.3 H, --SO.sub.3 M, wherein M is an alkali metal, --COOR', --CONHR', --CONR'R", --OCOOR', --OCOR', --OCONHR', (meth)acrylamino, (meth)-acryloxy, C.sub.6 -C.sub.12 aryl; C.sub.6 -C.sub.12 aryl substituted by C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, CN and/or by halogen; C.sub.3 -C.sub.12 heteroaryl; C.sub.3 -C.sub.12 heteroaryl substituted by C.sub.1 -C.sub.12 alkyl, C.sub.1 -C.sub.12 alkoxy, CN and/or by halogen; or Q of formula I, and at least one substituent Y.sub.1 to Y.sub.9 must be Q ##STR1## wherein q is 0 or 1,R is a cyclic radical andR.sub.Type: GrantFiled: September 10, 1997Date of Patent: January 11, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Pascal Hayoz, Andreas Valet, Vien Van Toan
-
Patent number: 5973085Abstract: Compounds of the formula I(A).sub.n --B (I)in which A is the radical of a strained cycloolefin, B is a direct bond or an n-valent bridging group and n is an integer from 2 to 8, with the exception of 1,2-bisnorbornenyl-ethane and norbornenecarboxylic acid norbornenemethyl ester. The compounds of the formula I can be polymerized with one-component catalysts (ring-opening metathesis polymerization).Type: GrantFiled: May 14, 1997Date of Patent: October 26, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Andreas Muhlebach, Andreas Hafner, Paul Adriaan Van Der Schaaf
-
Patent number: 5892051Abstract: Compounds of formula I,R--S--CH.sub.2 CH(OH)CH.sub.2 --S--R.sup.4 (I),where R is tert-alkyl of 4 to 20 carbon atoms and 4 is benzothiazolyl, --(CH.sub.2).sub.m --S--CH.sub.2 CH(OH)CH.sub.2 --S--(C.sub.1 -C.sub.16 alkyl), m is 0, or --(CH.sub.2).sub.s --R.sup.7 where s is 1 to 4 and R.sup.7 is benzothiazolyl are effective additives for lubricants, hydraulic fluids or other lubricant systems. Some novel compounds of formula I are claimed.Type: GrantFiled: December 16, 1996Date of Patent: April 6, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Hermann O. Wirth, Hans-Helmut Friedrich
-
Patent number: 5859102Abstract: Plastic mixtures, in particular recycled plastic mixtures, comprising predominantly polyolefins and 0.05-20% by weight of PVDC can be stabilized against thermo-oxidative degradation by addition of a combination of an organic phosphite or phosphonite and a metal salt of a fatty acid.Type: GrantFiled: June 20, 1996Date of Patent: January 12, 1999Assignee: Ciba Speciality Chemicals CorporationInventors: Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann
-
Patent number: 5854299Abstract: Process for the polymerization of cyclic olefins by photochemical ring-opening metathesis polymerization by irradiation, using catalytic amounts of a heat-stable ruthenium or osmium catalyst which has at least one photolabile ligand, the other coordination sites being occupied by non-photolabile ligands.Type: GrantFiled: March 8, 1996Date of Patent: December 29, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Andreas Muhlebach, Paul Bernhard, Andreas Hafner, Thomas Karlen, Martin Andreas Ludi
-
Patent number: 5814691Abstract: The invention relates to a PVC composition comprising a stabilizer combination of (b) polyDHP of the formula I ##STR1## where the radicals T, L, R, R', R" are as defined in claim 1, (c) a substance from the group consisting ofcrystalline hydrotalcites,crystalline or amorphous zeolites,crystalline or amorphous dawsonites, magadiites or kenyaites, disaccharide alcohols andsterically hindered amines containing the structural unit ##STR2## in which R.degree. is hydrogen or methyl, and (d) at least one zinc, aluminium or lanthanoid compound.Type: GrantFiled: December 4, 1995Date of Patent: September 29, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Karl Josef Kuhn, Wolfgang Wehner
-
Patent number: 5807966Abstract: An increase in the molecular weight of virgin polycondensates and polycondensate recyclates can be achieved by heating to above the melting point or glass transition temperature and by the addition of diphosphonite.Type: GrantFiled: December 19, 1996Date of Patent: September 15, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann
-
Patent number: 5804623Abstract: Recycled plastics, predominandy thermoplastics, from domestic, commercial and industrial waste can be stabilized against thermooxidative degradation by adding a combination of a sterically hindered phenol with an organic phosphite or phosphonite and a metal salt of a fatty acid.Type: GrantFiled: November 25, 1996Date of Patent: September 8, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Kurt Hoffmann, Heinz Herbst, Rudolf Pfaendner, Hans-Jurgen Sander, Franciszek Sitek
-
Patent number: 5795985Abstract: A novel process for the preparation of compounds of formula I ##STR1## by aminolysis of a p-halophenyl alkyl ketone of formula II ##STR2## with a cyclic amine of formula III ##STR3## in water at a temperature of at least 130.degree. C., in which formulae X is a halogen atom and R.sub.1, R.sub.2 and R.sub.3 are as claimed in claim 1, as well as the novel compounds of formula I and their use for the preparation of photoinitiators for the photopolymerisation of ethylenically unsaturated compounds.Type: GrantFiled: April 21, 1997Date of Patent: August 18, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Rinaldo Husler, Rudolf Schwabe, Reto Luisoli
-
Patent number: 5789470Abstract: The invention relates to stabilized recycled plastics, which can be obtained from domestic, commercial and industrial waste or valuable material collections, comprising a macrocyclic compounds containing a radical of formula (I) or (II), in the macrocycle or in a side group of the macrocycle, where the macrocycle comprises at least 8 atoms and in which the substituents R, independently of one another, are methyl, ethyl or propyl, or two radicals R on the same carbon atom are, together, a pentamethylene radical, and a is the number 0, 1 or 2. The invention also relates to a process for the stabilization of recycled plastics and to the use of the above macrocyclic compounds as stabilizer.Type: GrantFiled: March 20, 1997Date of Patent: August 4, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Heinz Herbst, Kurt Hoffmann, Franca Masina, Rudolf Pfaendner, Franciszek Sitek
-
Patent number: 5777113Abstract: The invention relates to novel compounds of formula I ##STR1## wherein the general symbols are as defined in claim 1, as stabilizers for organic materials against oxidative, thermal or light-induced degradation.Type: GrantFiled: October 10, 1995Date of Patent: July 7, 1998Assignee: Ciba Specialty Chemicals CorporationInventor: Rita Pitteloud
-
Patent number: 5777008Abstract: Novel oligomeric compounds of formula I ##STR1## wherein the general symbols are as defined in claim 1, are disclosed as stabilisers for protecting organic material against oxidative, thermal or light-induced degradation.Type: GrantFiled: May 25, 1995Date of Patent: July 7, 1998Assignee: Ciba Specialty Chemicals CorporationInventor: Rita Pitteloud
-
Patent number: 5773631Abstract: The invention described novel compounds of formula ##STR1## wherein the general symbols are as defined in claim 1, as stabilisers for protecting organic materials, in particular polymers and lubricants, against thermal, oxidative or light-induced degradation.Type: GrantFiled: February 26, 1996Date of Patent: June 30, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Peter Nesvadba, Samuel Evans, Christoph Krohnke, Jurg Zingg
-
Patent number: 5772921Abstract: The present invention relates to synergistic mixtures of at least one 2,4-dimethyl-6-s-alkyl phenol and at least one selected sterically hindered phenol according to formula II ##STR1## The variable "n" is 1, 2 or 4. X.sub.1 is tert-butyl. X.sub.2 is C.sub.1 -C.sub.4 alkyl. X.sub.3, when n is 1, is C.sub.1 -C.sub.20 alkyl, a triazinylamino group, or a --A.sub.1 --COO--A.sub.2 or --A.sub.1 --CONH--A.sub.2 group. X.sub.3, when n is 2, is a --E.sub.1 --COO--E.sub.2 --OOC--E.sub.3 -- or --E.sub.1 --CONH--E.sub.2 --NHCO--E.sub.3 -- group. X.sub.3, when n is 4, is ?--G.sub.1 --COO!.sub.4 --G.sub.2. The instant synergistic mixtures can be used to stabilize selected organic polymers against thermal, oxidative and/or actinic degradation.Type: GrantFiled: January 29, 1997Date of Patent: June 30, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Bernard Gilg, Kurt Stinsky
-
Patent number: 5770643Abstract: The invention relates to compositions comprisinga) a chlorine-containing polymer andb) at least one compound containing at least one radical of the formula I ##STR1## in which A is the additional groups or atoms necessary to form an unsubstituted or substituted six-membered heterocyclic ring containing two nitrogen ring atoms.Type: GrantFiled: March 20, 1996Date of Patent: June 23, 1998Assignee: Ciba Specialty Chemicals CorporationInventors: Wolfgang Wehner, Hans-Helmut Friedrich, Rolf Drewes