Patents by Inventor Frederick L. Herman

Frederick L. Herman has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 6892091
    Abstract: A novel apparatus and method for rapidly generating an electrical map of a chamber of a heart utilizes a catheter including a body having a proximal end and a distal end. The distal end has a distal tip and an array of non-contact electrodes having a proximal end and a distal end and at least one location sensor. Preferably, two location sensors are utilized. The first location sensor is preferably proximate to the catheter distal tip and the second location sensor is preferably proximate to the proximal end of the non-contact electrode array. The catheter distal end further preferably includes a contact electrode at its distal tip. Preferably, at least one and preferably both of the location sensors provide six degrees of location information. The location sensor is preferably an electromagnetic location sensor. The catheter is used for rapidly generating an electrical map of the heart within at least one cardiac cycle and preferably includes cardiac ablation and post-ablation validation.
    Type: Grant
    Filed: February 18, 2000
    Date of Patent: May 10, 2005
    Assignee: Biosense, Inc.
    Inventors: Shlomo Ben-Haim, Joshua Porath, Frederick L. Herman
  • Patent number: 5162562
    Abstract: A process is provided for making metallated and substituted alkynes from feedstocks which include alkadienes containing allenic unsaturation or such alkadienes in a mixture with alkynes having either internal or terminal unsaturation, such as a mixture of propadiene and propyne. This reaction involves an initial step in which the allenic hydrocarbon and any internal alkyne is isomerized and simultaneously the resultant terminal alkynes are metallated with an alkali metal. The reaction is carried out at relatively low temperatures in a suitable inert solvent such as diethylether. When metallation is complete the reaction mixture can be contacted directly with any suitable electrophile, such as a halo silane, for example, chlorotrimethylsilane, and the alkali metal on the terminal alkyne is replaced with the desired substituent. The products thus formed are useful as monomers for preparing polymers having a variety of properties, for example, as asymmetric membranes for gas separation.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: November 10, 1992
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frederick L. Herman, Ann C. L. Savoca, Mark L. Listemann
  • Patent number: 5062998
    Abstract: A process is provided for making metallated and substituted alkynes from feedstocks which include alkadienes containing allenic unsaturation or such alkadienes in a mixture with alkynes having either internal or terminal unsaturation, such as a mixture of propadiene and propyne. This reaction involves an initial step in which the allenic hydrocarbon and any internal alkyne is isomerized and simultaneously the resultant terminal alkynes are metallated with an alkali metal. The reaction is carried out at relatively low temperatures in a suitable inert solvent such as diethylether. When metallation is complete the reaction mixture can be contacted directly with any suitable electrophile, such as a halo silane, for example, chlorotrimethylsilane, and the alkali metal on the terminal alkyne is replaced with the desired substituent. The products thus formed are useful as monomers for preparing polymers having a variety of properties, for example, as asymmetric membranes for gas separation.
    Type: Grant
    Filed: April 23, 1990
    Date of Patent: November 5, 1991
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frederick L. Herman, Ann C. L. Savoca, Mark L. Listemann
  • Patent number: 4361712
    Abstract: The invention relates to a method of eliminating or substantially reducing the amount of cyanide formed in a polynitroaromatic, e.g. dinitrotoluene process. The invention comprises removing the nitrophenolic material from the mononitroaromatic formed in a first stage nitration of toluene prior to feeding the mononitroaromatic to the subsequent nitration zones.
    Type: Grant
    Filed: May 19, 1980
    Date of Patent: November 30, 1982
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frederick L. Herman, John E. Sawicki
  • Patent number: 4325972
    Abstract: Benzyl dimethyl amine is subject to electrofluorination in anhydrous HF to produce perfluoro-N,N-dimethylcyclohexylmethylamine. The obtained perfluoro compound is emulsified with the aid of a nonionic surfactant to form a stable emulsion showing promising use for administration as a blood substitute.
    Type: Grant
    Filed: June 30, 1981
    Date of Patent: April 20, 1982
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Robert P. Geyer, Frederick L. Herman
  • Patent number: 4314067
    Abstract: Polymerizable monomeric compounds corresponding to the general formula ##STR1## wherein R is H or CH.sub.3, U designates a cyclic or acyclic ureido or thioureido group and L designates a selected linking structure. The linking structure L may contain one or more oxy (ether), amino, amido, or carbonyl groups provided that any carbonyl group (CO) present is not directly attached to U or to an ethylenic carbon atom nor is such ethylenic carbon atom directly attached to a nitrogen atom.
    Type: Grant
    Filed: March 6, 1978
    Date of Patent: February 2, 1982
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frederick L. Herman, Dale D. Dixon
  • Patent number: 4302375
    Abstract: This invention relates to the paint composition having a unique paint vehicle, the paint vehicle comprises a latex comprising copolymer resin particles having at least 25% vinyl acetate polymerized therein, and the polymerized resin particles containing from about 0.1-10% by weight of a diallylic urea compound therein for providing wet adhesion characteristics to the paint composition.
    Type: Grant
    Filed: October 1, 1979
    Date of Patent: November 24, 1981
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Dale D. Dixon, Frederick L. Herman
  • Patent number: 4151142
    Abstract: Improved wet adhesion properties of water-based paints and coating compositions are obtained by incorporating into the polymeric resin emulsion systems employed in the formulation of such paints or coating compositions a monomeric compound having a terminal ureido group at one end thereof and a vinyl terminal group at the opposite end. Such incorporated monomeric compounds correspond to the general formula ##STR1## wherein R is H or CH.sub.3, U designates a cyclic or acyclic ureido or thioureido group and L designates a selected linking structure. In the simplest of such monomeric compounds, L is --CH.sub.2 --, as specifically represented by allyl urea. In other representative compounds the linking group L may be a polymethylene group - (CH.sub.2).sub.n --or the chain may contain one or more oxy (ether), amino, amido or carbonyl groups, provided that any carbonyl group (CO) present is not directly attached to U or to an ethylenic carbon atom nor is such ethylenic carbon directly attached to a nitrogen atom.
    Type: Grant
    Filed: January 31, 1978
    Date of Patent: April 24, 1979
    Assignee: Air Products and Chemicals, Inc.
    Inventors: Frederick L. Herman, Dale D. Dixon
  • Patent number: 4111877
    Abstract: Novel compounds of the general formula ##STR1## (m = 0 or 1; n = 2 or 3 and R = H or CH.sub.3) are produced by reacting a 2-aminoalkyl alkylene urea with an allyl ester of a carbonylic acid. Among the particular allyl esters disclosed as reactants are diallyl carbonate, allyl and methallyl chloroformate, diallyl and dimethallyl oxalate. The recovered allyl esters of the alkyleneureido amic acid compounds find particular use as functional comonomers for imparting wet adhesion properties to emulsion systems containing vinyl ester polymers used in paints and coating compositions.
    Type: Grant
    Filed: July 29, 1976
    Date of Patent: September 5, 1978
    Assignee: Air Products & Chemicals, Inc.
    Inventors: Dale D. Dixon, Frederick L. Herman