Patents Examined by L. Blaine Lankford
  • Patent number: 5491085
    Abstract: Peroxidase can be recovered from seed hulls in an improved method using a freeze-thaw technique. First, the seed hulls are comminuted, placed into water and homogenized. Next, the homogenate is frozen then thawed. The enzyme is then recovered from the aqueous solution by conventional means. Soybean or rice seed hulls can be used in this process.
    Type: Grant
    Filed: May 14, 1991
    Date of Patent: February 13, 1996
    Assignee: Enzymol International, Inc.
    Inventors: Alexander R. Pokora, Mark A. Johnson
  • Patent number: 5480781
    Abstract: Microorganisms from the genus Bacillus are used to convert chenodeoxycholic acid to 3-alpha-hydroxy-7-keto-5-beta-cholanic acid under aerobic conditions and alkaline pH. Preferred strains are Bacillus FERM BP-4390, Bacillus FERM BP-4391, Bacillus FERM BP-3651, Bacillus FERM BP-3393, Bacillus FERM BP-3398, Bacillus FERM BP-3395 and Bacillus FERM BP-3396. Microorganisms from the genus Bacillus are used to convert cholic acid to 3-alpha-hydroxy-7,12-diketo-5-beta-cholanic acid under aerobic conditions and alkaline pH. Preferred strains are Bacillus FERM BP-3393 and Bacillus FERM BP-3398. Microorganisms from the genus Bacillus are used to convert cholic acid to 3-alpha, 12-alpha-dihydroxy-7-keto-5-cholanic acid under aerobic conditions and alkaline PH. Preferred strains are Bacillus FERM BP-3395 and Bacillus FERM BP-4390.
    Type: Grant
    Filed: June 11, 1992
    Date of Patent: January 2, 1996
    Assignee: Tokyo Tanabe Company, Limited
    Inventors: Hiromi Kimura, Akio Okamura, Hiroshi Kawaide, Takurou Yamaura
  • Patent number: 5478722
    Abstract: Cells are treated to preserve them in non-frozen hydrated form with minimal alterations to their antigens or nucleic acids. This makes the cells useful as quality control (QC) reagents for processes such as calibrating and standardizing flow cytometry equipment, for use as "unknown" test samples for QC testing programs, and to prepare patient specimens for archival storage. This method includes: (1) treating the cells to inhibit proteolysis, preferably using several protease inhibitors; (2) fixing the cells, either by contacting them with a crosslinking agent such as formalin or paraformaldehyde, or by exposure to microwave radiation, while the cells are being agitated to promote the formation of crosslinking bonds within a single cell while inhibiting the formation of cell clumps; and (3) if the cells are treated with a chemical crosslinking agent, removing the crosslinking agent and contacting the cells with a quenching agent. The cells should be stored in a solution containing protease inhibitors.
    Type: Grant
    Filed: February 17, 1991
    Date of Patent: December 26, 1995
    Assignee: The Curators of the University of Missouri
    Inventor: Charles W. Caldwell
  • Patent number: 5477000
    Abstract: A plurality of viable plant regenerants can be produced by culturing an intact plant seed of in the presence of cytokinin and/or auxin growth factors. The growth factor is preferably benzylaminopurine and thiadiziron. The plant seed is preferably a pea, bean, geranium, peanut, grass pea, chickpea or lentil seed.
    Type: Grant
    Filed: June 2, 1994
    Date of Patent: December 19, 1995
    Assignee: University of Geulph
    Inventors: Praveen K. Saxena, Kamal Malik
  • Patent number: 5472854
    Abstract: A process for the production of 17-oxosteroids by fermentative oxidation of 17.beta.-hydroxy steroids is described, which is characterized in that for the fermentation, a bacterial culture of the species Mycobacterium spec. NRRL B-3805, Mycobacterium spec. NRRL B-3683, Mycobacterium phlei NRRL B-8154 or Mycobacterium fortuitum NRRL B-8153 is used.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: December 5, 1995
    Assignee: Schering Aktiengesellschaft
    Inventors: Alfred Weber, Mario Kennekke, Uwe Klages, Klaus Nickisch, Ralph Rohde
  • Patent number: 5470728
    Abstract: Cis-dihydrodiol compounds of the formula ##STR1## where n is 0 or 1 (preferably 0) are produced by the microbial oxidation of a diphenylaceylene compound of the formula ##STR2## using a mutant of a Pseudomonas bacteria at 25.degree. to 35.degree. C. and pH 6-8. The cis-dihydrodiol compound is in turn treated with an aqueous solution of a base to produce a corresponding 3-hydroxydiphenylacetylene compound or with an aqueous solution of an acid to produce a corresponding 2-hydroxyacetylene compound. The mutant strain is preferably Pseudomonas ATCC 55272.
    Type: Grant
    Filed: August 8, 1994
    Date of Patent: November 28, 1995
    Assignee: Bio-Technical Resources
    Inventor: Alan D. Grund
  • Patent number: 5464769
    Abstract: Conifer somatic embryos can be desiccated to a moisture content below 50%. A moisture content as low as 10% can be produced. The desiccated somatic conifer embryos have greatly increased ability to store lipids and other nutrients as compared to the corresponding zygotic embryo. The embryos are desiccated using a method which requires the utilization of ABA and PEG.
    Type: Grant
    Filed: December 1, 1993
    Date of Patent: November 7, 1995
    Assignee: University of Saskatchewan
    Inventors: Stephen M. Attree, Lawrence C. Fowke
  • Patent number: 5462861
    Abstract: A method for regulating enzyme activity, which entails contacting one or more enzymes with a gas containing one or more noble gases or mixtures thereof. The activity of an enzyme on a substrate can be improved by contacting the enzyme with a noble gas under specific temperatures and pressures. The preferred noble gases are krypton, neon, xenon, argon or mixtures of these gases. The enzymes whose activity can be improved are hydrolases, lyases, isomerases and ligases.
    Type: Grant
    Filed: May 17, 1993
    Date of Patent: October 31, 1995
    Assignee: American Air Liquide, Chicago Research Center
    Inventors: Kevin C. Spencer, Pascal Schvester, Christine E. Boisrobert
  • Patent number: 5459055
    Abstract: An essentially pure preparation of thermostable RNase H isolated from Thermus flavus is disclosed. In one preferable form of the invention, the RNase H is capable of biological activity after incubation at temperatures equal to or greater than 70.degree. C. for at least ten minutes. The present invention is also a method of digesting RNA polymers that are in duplex form with a DNA molecule. The method comprises exposing the duplex to the isolated thermostable RNase H. The present invention is also a genetic construct capable of expressing a thermostable RNase H.
    Type: Grant
    Filed: December 6, 1993
    Date of Patent: October 17, 1995
    Assignee: Epicentre Technologies Corporation
    Inventors: Jerome J. Jendrisak, Robert E. Smith, Gary A. Dahl
  • Patent number: 5457043
    Abstract: Biologically pure strains of bacteria and enzymes therefrom capable of degrading indigo and indigo carmine are disclosed. A preferred strain is bacteria strain ATCC 55396. A method for treating water polluted with indigo or indigo carmine and decolorization of products dyed with indigo and/or indigo carmine by bringing the water into contact with the bacteria or with enzymes extracted from the bacteria is also disclosed.
    Type: Grant
    Filed: December 21, 1994
    Date of Patent: October 10, 1995
    Assignee: Hong Kong Institute of Biotechnology
    Inventors: Kai-Keung Mark, Walter Ho
  • Patent number: 5451510
    Abstract: 3-.alpha., 7-.alpha.-dihydroxy-12-keto-5-.beta.-cholanic acid is microbially produced from cholic acid by alkalophilic Bacillus strains. The preferred strains are Bacillus sp. FERM BP-3394 and Bacillus sp. FERM BP-3397.
    Type: Grant
    Filed: October 21, 1992
    Date of Patent: September 19, 1995
    Assignee: Tokyo Tanabe Company, Limited
    Inventors: Hiromi Kimura, Akio Okamura, Hiroshi Kawaide
  • Patent number: 5447859
    Abstract: Methods and compositions useful for the separation of viruses, including retroviruses and vital vectors, from preparations are disclosed. Sulfated oligosaccharides with at least about 6 .mu.moles sulfate per gram of oligosaccharide are provided. In one aspect, a sulfated oligosaccharide of the present invention may be used in the purification of a virus, such as a lipid envelope virus. The present invention also discloses methods for the removal of a contaminating virus from a preparation, such as biologic therapeutics.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: September 5, 1995
    Assignee: Viagene
    Inventor: Charles E. Prussak
  • Patent number: 5439667
    Abstract: Methods are provided to prepare a variety of tissues in a pathology-stable form for microscopic examination by preserving the tissue with an aqueous solution of C.sub.2-6 dialdehyde and/or dialdehyde addition products, including glyoxal and/or glutaraldehyde in an amount sufficient to prevent autolysis and other degradative changes. The solution may further contain alcohols, chelating agents, buffers and acids. In one embodiment,-the aqueous solution contains glyoxal or glyoxal in the form of a bisulfite, hydrate or alcohol addition product and an osmotic controlling ionic and/or nonionic chemical. This solution prevents degradation of tissue without substantial cross-linking.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: August 8, 1995
    Inventor: Gerald W. Camiener
  • Patent number: 5438131
    Abstract: Oligonucleotides having at least ten nucleosides, at least two of which are selected from the group consisting of A, T, C and G, and at least one nucleoside being a universal nucleoside of the formula: ##STR1## wherein: each R.sub.n is H, OH, F or OCH.sub.3 ;Z is a member of the group consisting of O, S and CH.sub.2 ; andB is a five-membered, heterocyclic base having at least two double bonds, and further having an electron withdrawing group bonded thereto, said base with electron withdrawing group being represented by the formula: ##STR2## wherein: said base with electron withdrawing group is bonded at X.sub.4 to the sugar portion of the nucleoside;X.sub.1, X.sub.3 and X.sub.5 are each members of the group consisting of N, O, C, S and Se;X.sub.2 and X.sub.4 are each members of the group consisting of N and C; andW is a member of the group consisting of F, Cl, Br, I, O, S, OH, SH, NH.sub.2, NO.sub.2, C(O)H, C(O)NHOH, C(S)NHOH, NO, C(NOCH.sub.3)NH.sub.2, OCH.sub.3, SCH.sub.3, SeCH.sub.3, ONH.sub.2, NHOCH.sub.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: August 1, 1995
    Inventors: Donald E. Bergstrom, Philip C. Andrews, Ruthann Nichols, Peiming Zhang
  • Patent number: 5429942
    Abstract: The invention discloses a method for producing a single cell oil containing gamma-linolenic acid characterized in that at least one microorganism of the order Mucorales preferably of the genus Mortierella, Actinomucor, Mucor, Rhizomucor or Rhizopus is cultured in a growth medium which is substantially starch and sugar free and which contains, as a carbon source material, at least one monocarboxylic acid of 2 to 5 carbon atoms, preferably acetic acid and recovering the oil from the resultant cultured microorganism biomass. The invention also relates to a method of treating the organic acid stream of the Fischer-Tropsch synthesis process to remove organic material therefrom.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: July 4, 1995
    Assignee: Sasol Industries (Proprietary) Limited
    Inventors: Johan L. F. Kock, Alfred Botha
  • Patent number: 5429943
    Abstract: The present invention relates to Monascus anka 732Y3 (KCCM 10014 induced from Monascus anka ATCC 16360 (=IFO 4478, KFCC 11832), and more particularly is concerned with Monascus anka 732Y3 (KCCM 10014), which was induced from Monascus anka ATCC 16360 (=IFO 4478, KFCC 11832) by ultra-violet light irradiation and produces higher amounts of pigments than Monascus anka ATCC 16360.
    Type: Grant
    Filed: September 9, 1993
    Date of Patent: July 4, 1995
    Assignee: Lotte Confectionery Co., Ltd.
    Inventors: Jun-Sung Kim, Kee-Hyun Choi, Jang-Youn Choi, Yoon-Soo Lee, Ik-Boo Kwon
  • Patent number: 5422106
    Abstract: Two new Bacillus thuringienses strains, LMG P-14025 and LMG P-14026, produce insecticidal components that are toxic to Coleoptera, more particularly toxic to Diabrotica spp. The strains themselves, their sporulated cultures, or their insecticidally effective components can be used as the active ingredient in an insecticidal composition for combatting Coleoptera, more specifically Diabrotica species.
    Type: Grant
    Filed: September 16, 1994
    Date of Patent: June 6, 1995
    Assignee: Plant Genetic Systems, N.V.
    Inventors: Bart J. Lambert, Stefan K. Jansens, Marnix Peferoen
  • Patent number: 5413786
    Abstract: Blood coagulation is accelerated by contacting blood with an accelerator of hydrolase activity. The activation of the precursors of serine protease including Factor XII and the enzyme activity of serine protease is accelerated. The accelerator is a metal complex containing a ligand which is a cyclic compound having a five- or six-membered ring containing carbonyl groups adjacent to each other. Examples of such ligands are oxidized alkylgallate, partially or totally oxidized ellagic acid, partially or completely oxidized 1,4- di(3,4-dihydroxyphenyl) 2,3-dimethylbutane, 1,2,3-triketohydroindene and isatin. The metal of the complex is preferably Fe, Co, Ni, or Al. The complex may be combined with a hydrolase as a co-accelerator of coagulation, an organic acid having an amino salt and/or a quaternary nitrogen or an antifibrinolysis agent and/or an anti-plasmin agent.
    Type: Grant
    Filed: October 13, 1993
    Date of Patent: May 9, 1995
    Assignee: Sekisui Kagaku Kogyo Kabushiki Kaisha
    Inventor: Hideo Anraku
  • Patent number: 5405944
    Abstract: There are described novel glycosides of catechol estrogen, a method of preparing the same, and a medicament comprising one of the glycosides as an active ingredient. The glycosides are shown by the formula of ##STR1## wherein X is carbonyl group or ##STR2## R.sub.10 is hydroxyl group or glycosyloxy group, and R.sub.2 is a hydrogen atom or ethynyl group; R.sub.11 is a hydrogen atom, hydroxyl group, or glycosyloxy group; R.sub.12 is hydroxyl group or glycosyloxy group; and R.sub.13 is hydroxyl group or glycosyloxy group,in which glycosyloxy group is selected from the group consisting of glucosyloxy, galactosyloxy, mannosyloxy, arabinosyloxy, ribosyloxy, xylosyloxy, fructosyloxy, rhamnosyloxy, fucosyloxy, maltosyloxy, cellobiosyloxy, lactosyloxy, sucrosyloxy, maltotriosyloxy, maltotetraosyloxy, maltopentaosyloxy, maltohexaosyloxy, maltoheptaosyloxy, and sialosyloxy, and in this case, at least one of R.sub.10, R.sub.11, R.sub.12, and R.sub.13 is glycosyloxy group as defined above.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: April 11, 1995
    Assignee: Institute of Applied Biochemistry
    Inventors: Takehiko Suzuki, Sadaaki Komura, Naoko Ishida, Nobuko Ohishi, Kunio Yagi
  • Patent number: 5405770
    Abstract: A cell line obtained from Heliothis subflexa, designated BCIRL-HS-AM1, and an in vitro process using the cell line to produce viral agents including viruses, viral particles, and/or occlusion bodies. The cell line is particularly useful in the production of baculoviruses and occlusion bodies of baculoviruses.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: April 11, 1995
    Assignee: The United States of America as represented by the Secretary of Agriculture
    Inventor: Arthur H. McIntosh