Patents Represented by Attorney John E. Crowe
  • Patent number: 4938832
    Abstract: A method for placing hydrophobic polyolefin fiber in condition for cutting, carding and production of nonwoven material without substantial sacrifice in desired hydrophobic properties in the corresponding nonwoven, by utilization of a sequential treatment of the fiber with a neutralized phosphoric acid ester and a polysiloxane of defined classes.
    Type: Grant
    Filed: May 30, 1989
    Date of Patent: July 3, 1990
    Assignee: Hercules Incorporated
    Inventor: A. Chandler Schmalz
  • Patent number: 4929290
    Abstract: A propellant composition and method for limiting the corrosive properties of by-products from initiated crash bag propellant compositions comprising a 1(a) or 2(a) group metal azide salt, an oxidizer in the form of an oxide of a non-toxic transition metal element, and an effective amount of a modifier component of the formulaMe.sub.x (An).sub.owhereinMe is a metal cation selected from iron, copper, cobalt, nickel, and molybdenum;An is an anion group which is chemically compatible with and capable of reacting with the metal of the azide salt to form nitrogen gas and non-toxic by-products less corrosive than the corresponding hydroxide of the azide metal would be; andx and o are individually defined as a positive number not exceeding about 4, the sum of which does not exceed about 5.
    Type: Grant
    Filed: November 17, 1989
    Date of Patent: May 29, 1990
    Assignee: Hercules Incorporated
    Inventor: Richard V. Cartwright
  • Patent number: 4920743
    Abstract: A propellant composition and method for limiting the corrosive properties of by-products from initiated crash bag propellant compositions comprising a 1(a) or 2(a) group metal azide salt, an oxidizer in the form of an oxide of a non-toxic transition metal element, and an effective amount of a modifier component of the formulaMe.sub.x (An).sub.owhereinMe is a metal cation selected from iron, copper, cobalt, nickel, and molybdenum;An is an anion group which is chemically compatible with and capable of reacting with the metal of the azide salt to form nitrogen gas and non-toxic by-products less corrosive than the corresponding hydroxide of the azide metal would be; andx and o are individually defined as positive numbers appropriate to indicate the correct chemical formula.
    Type: Grant
    Filed: July 25, 1988
    Date of Patent: May 1, 1990
    Assignee: Hercules Incorporated
    Inventor: Richard V. Cartwright
  • Patent number: 4907609
    Abstract: Filter element and method for increasing the hardness thereof by contacting filter plug material with effective amounts of (a) a water soluble resin (or copolymer) having available chelate bond-forming chemical groups and (b) a water soluble nontoxic salt, the metal cation of the nontoxic salt forming a chelate bond with the chelate bond-forming chemical groups of said water soluble resin.
    Type: Grant
    Filed: August 24, 1988
    Date of Patent: March 13, 1990
    Assignee: Hercules Incorporated
    Inventors: Richmond R. Cohen, Jimmie D. McCarty
  • Patent number: 4896683
    Abstract: A method for controlling nicotine delivery through a cigarette filter relative to total particulate pass-through concentration, and the corresponding filter utilizing, as a filter modifier component, at least one water-soluble metal salt of a weak acid, the choice and amount of salt within the filter favoring an alkaline pH exceeding about pH 8, the amount of alkalinity being correlated to the desired amount of nicotine pass-through while corresponding nicotine filter retention properties are keyed to the presence and concentration of a water soluble salt of a strong acid within the filter.
    Type: Grant
    Filed: October 17, 1988
    Date of Patent: January 30, 1990
    Assignee: Hercules Incorporated
    Inventors: Richmond R. Cohen, David J. Gibboni
  • Patent number: 4886560
    Abstract: Method and coating composition for promoting ignition of deterrent-coated smokeless propellant by applying thereto a nitrocellulose-based igniter component as an overcoat.
    Type: Grant
    Filed: December 28, 1988
    Date of Patent: December 12, 1989
    Assignee: Hercules Incorporated
    Inventor: Richard V. Cartwright
  • Patent number: 4868031
    Abstract: A method for controlling opacity, softness, and strength of polyolefin fiber-containing nonwoven material and corresponding nonwoven material, obtained by utilizing at least 25%, based on web weight, of polyolefin filament (a) having an original spun denier not exceeding about 24 dpf, (b) having a final drawn denier of not less than about 1 dpf, and (c) delta, diamond, or mixed delta and diamond cross-sectional configurations alone or combined with fiber having round or other cross sectional configuration.
    Type: Grant
    Filed: October 21, 1988
    Date of Patent: September 19, 1989
    Assignee: Hercules Incorporated
    Inventors: James P. Modrak, Owen P. Roberts
  • Patent number: 4837078
    Abstract: A wipe material capable of retaining opposed wet and dry facings characterized by (A) a wet facing comprising one or more fiber- or fiber-like-web(s) having hydrophilic/hydrophobic component blends of indicated wt. % ranges and denier and (B) a dry facing comprising one or more fiber- or fiber-like-webs containing one or more hydrophobic components of mixed denier not exceeding a given denier; and a method for obtaining the same.
    Type: Grant
    Filed: December 17, 1987
    Date of Patent: June 6, 1989
    Assignee: Hercules Incorporated
    Inventor: James H. Harrington
  • Patent number: 4811745
    Abstract: Method for controlling delivery of by-products found in cigarette smoke by utilizing a cigarette filter element comprising one or more substrates treated with an effective amount of at least one of (A) zinc chloride, ferrous bromide, calcium bromide, zinc thiocyanate, sarcosine hydrochloride and manganese sulfate; alone or combined with (B) glyceryl triacetate; plus corresponding filter element(s) and cigarette(s) utilizing such filter element(s).
    Type: Grant
    Filed: February 4, 1988
    Date of Patent: March 14, 1989
    Assignee: Hercules Incorporated
    Inventors: Richmond R. Cohen, David J. Gibboni
  • Patent number: 4798757
    Abstract: A method for controlling opacity, softness, and strength of polyolefin fiber-containing nonwoven material and the corresponding nonwoven material by utilizing at least 25%, based on web weight, of polyolefin filament (a) having an original spun denier not exceeding about 4 dpf, (b) having a final drawn denier of about 1.9-3.0 dpf, and (c) a delta cross-sectional configuration.
    Type: Grant
    Filed: June 22, 1987
    Date of Patent: January 17, 1989
    Assignee: Hercules Incorporated
    Inventors: James P. Modrak, Owen P. Roberts
  • Patent number: 4798570
    Abstract: An improved process for preparing fiber rods useful as cigarette filter tips comprises feeding a synthetic fiber tow through an air jet bulker directly into the garniture of a conventional cigarette filter making apparatus. The process allows production of filters with lower denier tow than has heretofore been possible while affording to the manufacturer greater versatility to change filter characteristics more readily.
    Type: Grant
    Filed: December 9, 1982
    Date of Patent: January 17, 1989
    Assignee: Hercules Incorporated
    Inventor: George Jurkiewitsch
  • Patent number: 4763674
    Abstract: Method for reducing normal concentrations of hydrogen cyanide and/or nitrogen oxide by-products in cigarette smoke, by using, as garniture feed for a cigarette filter rod-making apparatus, one or more substrates, one or more surfaces thereof being treated by applying thereto an effective amount of at least one of(A) a solution, emulsion or dispersion of at least one of sodium bicarbonate, sodium carbonate, potassium permanganate, manganese dioxide in a nonionic spin solution;(B) glycerol triacetate;and corresponding filter element and cigarette utilizing a filter formed of such substrate(s).
    Type: Grant
    Filed: April 16, 1986
    Date of Patent: August 16, 1988
    Assignee: Hercules Incorporated
    Inventor: Michael D. Lelah
  • Patent number: 4752634
    Abstract: Disclosed are hot melt compositions having good resistance to flow at temperatures up to 100.degree. C. The compositions are homogenous blends, which consist essentially of (1) an ethylene--mono-unsaturated ester copolymer having a melt index from 2 to about 20, or an ethylene terpolymer having a melt index of from about 6 to about 20; (2) a heat resistant polymer having a crystalline melting point greater than 109.degree. C.; (3) a tackifier resin having a Ring and Ball (R&B) softening point of from about 85.degree. C. to about 110.degree. C.; and (4) a hydrocarbon wax. When the tackifier resin has a R&B softening point of 100.degree. C. to about 110.degree. C., a naphthenic oil must also be added. The compositions may also contain a finely divided inorganic filler when used as an adhesive to produce pile fabrics or for backcoating the primary backing of a tufted carpet. The compositions are useful in the manufacture of carpets.
    Type: Grant
    Filed: April 17, 1986
    Date of Patent: June 21, 1988
    Assignee: Hercules Incorporated
    Inventor: Raymond W. Goss
  • Patent number: 4750374
    Abstract: A method and device for monitoring and evaluating structural stability of a multicomponent laminate body by use of a plurality of oriented sensor fingers, each of which comprises a supporting structure and sensing means secured thereto, the sensing means being capable of anchoring or securing, at one end, to one or more preselected components or subgroup of the laminate body with transversely arranged probing means endwise secured to a laterally movable linking member connected to a recording means for translating relative lateral movements between said components or subgroups under preset conditions into a mechanical or electronic record.
    Type: Grant
    Filed: May 1, 1987
    Date of Patent: June 14, 1988
    Assignee: Hercules Incorporated
    Inventor: Raymond W. Goss
  • Patent number: 4739025
    Abstract: A product and method for obtaining a radiation-resistant polyolefin-containing product, by handling and processing the corresponding homopolymer or copolymer melt and resulting extrudate in a manner favoring retention of a high smectic and less than about 20 wt % monoclinic configuration.
    Type: Grant
    Filed: May 5, 1986
    Date of Patent: April 19, 1988
    Assignee: Hercules Incorporated
    Inventor: George N. B. Burch
  • Patent number: 4734141
    Abstract: A crash bag propellant composition and method for generating non-toxic nitrogen gas comprising an azide salt and an oxidant component in which metal oxides are substantially replaced with one or more bi-metallic complexes containing copper or iron in combination with chromium, molybdenum or tungsten.
    Type: Grant
    Filed: March 27, 1987
    Date of Patent: March 29, 1988
    Assignee: Hercules Incorporated
    Inventors: Richard V. Cartwright, Steven J. Hardwick
  • Patent number: 4663370
    Abstract: Polyolefin reinforced asphalt paving and sealing composition containing straight chain unsaturated fatty acid having up to 30 weight percent rosin as a plasticizer, plus an adhesion control component comprising high density polyolefin fines; and a corresponding method for controlling high temperature tracking and washing characteristics without aggravating mixing or plugging problems, by replacing, at least in part, regular inorganic aggregate such as sand with high density polyolefin fines.
    Type: Grant
    Filed: October 7, 1985
    Date of Patent: May 5, 1987
    Assignee: Hercules Incorporated
    Inventors: John B. Marvel, Sr., James P. Modrak
  • Patent number: 4662759
    Abstract: An injection system for asphalt, asphalt-containing or other viscous compositions, comprising a mixing drum or receptacle, an injection device having a housing and mounted nozzle jet for preparation and discharge of a premix comprising such asphalt or other composition(s) admixed with staple fiber, means for supporting the injection device, and means for supplying composition and fiber components through the injection device in flowable condition, the composition flow pattern being arranged external and generally concentric to the fiber flow and in a downstream blocking flow pattern relative to the fiber flow to assure wetting and encapsulation thereof before discharge of the premix; and a method for introducing staple fiber and filler or other additives, as desired, into the asphalt composition by using the injection device.
    Type: Grant
    Filed: December 19, 1985
    Date of Patent: May 5, 1987
    Assignee: Hercules Incorporated
    Inventors: Bruce K. Leibee, James P. Modrak
  • Patent number: D311997
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: November 13, 1990
    Assignee: Hercules Incorporated
    Inventor: Richard J. Legare
  • Patent number: D313319
    Type: Grant
    Filed: June 26, 1987
    Date of Patent: January 1, 1991
    Assignee: Hercules Incorporated
    Inventor: Richard J. Legare