Patents Represented by Attorney Marion C. Staves
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Patent number: 4659648Abstract: Disclosed is a photoresist using a 3-vinylcarbazole as the photopolymerizable monomer.Type: GrantFiled: October 21, 1985Date of Patent: April 21, 1987Assignee: Hercules IncorporatedInventor: Frank P. Tise
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Patent number: 4607077Abstract: Poly(dicyclopentadiene) made with an olefin metathesis catalyst system by a Reaction Injection Molding process is improved by adding flame retardant compounds.Type: GrantFiled: May 7, 1985Date of Patent: August 19, 1986Assignee: Hercules IncorporatedInventors: Paul A. Silver, Alexander Lukacs, III
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Patent number: 4604270Abstract: Lewis acid and oxidant impurities are removed from inert fluids by contacting with a high capacity macroreticulate polymer comprising a macroreticulate polymer backbone having a plurality of pendant functional groups or mixtures of functional groups having the general formula: ##STR1## where Ar is an aromatic hydrocarbon radical containing from one to three rings; R.sub.1 and R.sub.2 are the same or different and are selected from the group consisting of hydrogen, alkyl hydrocarbon radicals, methylene-bridged benzophenone radicals, salts of methylene-bridged benzophenone, methylene-bridged fluorenone radicals and salts of methylene-bridged fluorenone; and M is selected from the group consisting of lithium, potassium, sodium, alkyl magnesium, and alkyl zinc.Type: GrantFiled: July 31, 1985Date of Patent: August 5, 1986Assignee: Hercules IncorporatedInventor: Glenn M. Tom
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Patent number: 4603148Abstract: Lewis acid and oxidant impurities are removed from inert fluids by contacting with a high capacity macroreticulate polymer comprising a macroreticulate polymer backbone having a plurality of pendant functional groups or mixtures of functional groups having the general formula: ##STR1## where Ar is an aromatic hydrocarbon radical containing from one to three rings; R.sub.1 and R.sub.2 are the same or different and are selected from the group consisting of hydrogen, alkyl hydrocarbon radicals, methylene-bridged benzophenone radicals, salts of methylene-bridged benzophenone, methylene-bridged fluorenone radicals and salts of methylene-bridged fluorenone; and M is selected from the group consisting of lithium, potassium, sodium, alkyl magnesium, and alkyl zinc.Type: GrantFiled: September 28, 1984Date of Patent: July 29, 1986Assignee: Hercules IncorporatedInventor: Glenn M. Tom
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Patent number: 4594396Abstract: A cure system for halogen-containing polymers that comprises a thiourea derivative, a thiuram sulfide and an inorganic base yields stable cross-linked products with useful properties when incorporated into normal vulcanization procedures.Type: GrantFiled: December 5, 1984Date of Patent: June 10, 1986Assignee: Hercules IncorporatedInventor: Dominick A. Berta
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Patent number: 4590063Abstract: Compounds of the formula ##STR1## where R is a methyl, ethyl or propyl group and n is 1 or 2 and their nontoxic salts are useful as anticonvulsants.Type: GrantFiled: April 25, 1985Date of Patent: May 20, 1986Assignee: Adria Laboratories, Inc.Inventors: John P. Carter, Jr., Richard L. Wolgemuth
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Patent number: 4563413Abstract: The photosensitive composition of this invention contains (1) an ethylenically unsaturated component capable of forming a high polymer by addition polymerization or crosslinking, (2) a cyclic cisoid conjugated diene as a photooxidizable component capable of reacting with singlet oxygen to form an endoperoxide, and (3) a photooxygenation sensitizer. A process for preparing a photosensitive element, such as a relief printing plate, embodying a layer of such a composition is described.Type: GrantFiled: April 23, 1984Date of Patent: January 7, 1986Assignee: Hercules IncorporatedInventor: Wayne R. Messer
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Patent number: 4543101Abstract: A device for use in equalizing the pressure inside a vial during the addition or removal of fluid comprising a one piece sterilizable device for use in equalizing the pressure inside a vial during the addition or removal of fluid which comprises a cannula having a sharpened beveled lower end for puncturing the septum of a vial, a blunt upper end covered with a septum that can be punctured by the needle of a hypodermic syringe, and an enlarged annular portion below the blunt upper end limiting entry of the device into the vial, said enlarged annular portion having an air channel leading from the inside of the cannula through the enlarged annular portion to the outside of the cannula said air channel being provided at its outer end with means for one-way air flow.Type: GrantFiled: March 28, 1984Date of Patent: September 24, 1985Assignee: Adria Laboratories, Inc.Inventor: Robert C. Crouch
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Patent number: 4540814Abstract: Compounds of the formula ##STR1## where R is a methyl, ethyl or propyl group and n is 1 or 2 and their nontoxic salts are useful as anticonvulsants.Type: GrantFiled: June 24, 1983Date of Patent: September 10, 1985Assignee: Adria Laboratories, Inc.Inventors: John P. Carter, Jr., Richard L. Wolgemuth
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Patent number: 4518677Abstract: It has been found that excellent quality photopolymer printing plates having resistance to alcohol-based inks can be prepared by (a) spreading a photopolymer composition comprising a chain extended, liquid, terminally olefinically unsaturated polymer; from about 1% to about 50% by weight based on the weight of the polymer of at least one ethylenically unsaturated monomer; from about 0.1% to about 10% by weight based on the weight of the polymer of photoinitiator; and from about 0.01% to about 2% by weight based on the weight of the polymer of a stabilizer on a support to form a photopolymer element, (b) exposing to actinic light selected areas of said photopolymer composition on said support until substantial cross-linking takes place in the exposed areas without significant cross-linking in the unexposed areas, and (c) removing the unexposed areas of photopolymer composition by washing the plate with an aqueous detergent solution.Type: GrantFiled: April 9, 1984Date of Patent: May 21, 1985Assignee: Hercules IncorporatedInventor: Rudolph L. Pohl
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Patent number: 4497073Abstract: An improved lacrosse glove having a hand receiving portion and a cuff or gauntlet connected by a novel flexible connecting means comprising a padded portion attached at one edge to the inside of the hand receiving portion and at the other edge to an elastic portion which is in turn attached to the inside of the cuff. The padded portion provides protection in the opening between the hand receiving portion and the cuff, while the elastic portion, which is inside the cuff, provides flexibility and maximum motion in the area of the user's wrist.Type: GrantFiled: June 29, 1983Date of Patent: February 5, 1985Inventor: Warren D. Deutsch
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Patent number: 4489206Abstract: It has been found that stereospecific R(-)-4-demethoxy-7-deoxydaunomycinone can be synthesized from the known compound 4-demethoxy-7,9-dideoxydaunomycinone. R(-)-4-Demethoxy-7-deoxy-daunomycinone is an intermediate in the synthesis of (+)-4-demethoxydaunomycinone, the aglycone of the nonnaturally occurring and antitumor active (-)7(S)9(S)-4-demethoxydaunorubicin.Type: GrantFiled: May 13, 1983Date of Patent: December 18, 1984Assignee: Adria Laboratories, Inc.Inventors: Michael P. Cava, Domingo Dominguez
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Patent number: 4482681Abstract: Halogen-containing polymers can be crosslinked by heat-curing with a crosslinking system made up of a crosslinking agent which is either a polymercaptan or an ester derivative thereof, a basic material and a hydrated salt. When the hydrated salt is chosen so that it releases its water of hydration during heat-curing the rate of crosslinking is enhanced.Type: GrantFiled: September 29, 1982Date of Patent: November 13, 1984Assignee: Hercules IncorporatedInventors: Dominic A. Berta, Vernon L. Kyllingstad
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Patent number: 4475810Abstract: An improved apparatus for the preparation of photopolymerized relief image plates is disclosed in which a series of indicators are used to indicate that the liquid photopolymerizable material is prepared for exposure to actinic radiation. Such detection may be accomplished by the closure of electrically energized indicator circuits used to detect when a top cover is in position over a layer of liquid photopolymerizable material. In addition, the actinic radiation may be activated directly by the closure of such circuits. Also disclosed is a method by which the time required for the top cover to come to rest in position over the photopolymerizable layer can be measured, and this measurement may then be used as a control to determine if a sufficient amount of photopolymerizable material to make an acceptable relief image plate was deposited on the platemaking surface.Type: GrantFiled: October 6, 1980Date of Patent: October 9, 1984Assignee: Hercules IncorporatedInventor: Richard B. Schroeder
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Patent number: 4450226Abstract: An apparatus and method is disclosed which will rapidly provide a uniform layer of photopolymerizable material for a printing plate. A regulated flow of liquid photopolymerizable resin is supplied from an external reservoir into a manifold which is approximately C-shaped in cross-section and has one at least partially open side face. A gate is disposed before the open side face of the manifold and this gate is vertically adjustable so that together the gate and open side face define an orifice slot or passageway from which a uniform curtain of the resin may flow onto a platemaking surface. The manifold member has a downward projecting wedge shaped lip which acts as a doctor blade on the liquid resin layer deposited as the manifold is moved across the plate-making surface.Type: GrantFiled: December 8, 1982Date of Patent: May 22, 1984Assignee: Hercules IncorporatedInventor: William Bloothoofd
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Patent number: 4448724Abstract: A synthesis of 4-demethoxydaunomycinone and its derivatives from the known compound 9-acetyl-6,11-dihydroxy-7,8,9,10-tetrahydro-5,12-naphthacenedione. 4-Demet hoxydaunomycinone may be converted to 4-demethoxydaunorubicin which is an anthracycline derivative known to have antitumor activity.Type: GrantFiled: December 20, 1982Date of Patent: May 15, 1984Assignee: The Trustees of the University of PennsylvaniaInventors: Michael P. Cava, Domingo Dominguez
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Patent number: 4447495Abstract: In an improved adhesive process the amount of azidosilane coupling agent necessary to adhere a siliceous material to a polymer is reduced. The siliceous material, the azidosilane coupling agent and the polymer are admixed with an organosilicon compound and then heated at a temperature and for a time sufficient to decompose the azide groups of the azidosilane coupling agent. The reduction in the amount of azidosilane coupling agent is accomplished without adversely affecting the adhesion of the polymer to the siliceous material. Also disclosed are the products thus produced.Type: GrantFiled: March 8, 1983Date of Patent: May 8, 1984Assignee: Hercules, IncorporatedInventor: Edward J. Engle, III
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Patent number: 4442302Abstract: It has been found that excellent quality photopolymer printing plates having resistance to alcohol-based inks can be prepared from photopolymer compositions comprising a chain extended, liquid, terminally olefinically unsaturated polymer; from about 1% to about 50% by weight based on the weight of the polymer of at least one ethylenically unsaturated monomer; from about 0.1% to about 10% by weight based on the weight of the polymer of photoinitiator; and from about 0.01% to about 2% by weight based on the weight of the polymer of a stabilizer.Type: GrantFiled: July 2, 1982Date of Patent: April 10, 1984Assignee: Hercules IncorporatedInventor: Rudolph L. Pohl
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Patent number: 4416974Abstract: A radiation curable printing medium suitable for screen printing on glass, metal and ceramics which is to be cured and subsequently fired, comprising(a) 4 to 25% by weight of a polymerizable, liquid prepolymer containing at least about two ethylenically unsaturated end groups;(b) 4 to 15% by weight of at least one ethylenically unsaturated polymerizable monomer containing a polar functional group;(c) 60 to 90% by weight of a ceramic frit; and(d) 0.02 to 2% by weight of a polymerization inhibitor.Type: GrantFiled: November 5, 1981Date of Patent: November 22, 1983Assignee: Hercules IncorporatedInventor: Bernard J. Scheve
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Patent number: RE32145Abstract: It has been found that fungal diseases can be effectively treated systemically by oral administration of tolciclate .[.or tolnaftate.].. The .[.drugs.]. .Iadd.drug .Iaddend.will generally be administered in divided daily doses in the form of tablets, capsules, syrups or suspensions.Type: GrantFiled: November 5, 1984Date of Patent: May 13, 1986Assignee: Hercules IncorporatedInventor: Irving Shemano