Patents by Inventor Brian Long

Brian Long 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: 6455631
    Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula wherein the terminal, modified hydrazide groups are present in an amount of 1 to 25% by weight [calculated as C(O)—NH—NH—C(O), MW 84], based on the weight of the polyurethanes, and wherein X represents OR′ or NHR′, R represents the residue obtained by removing the isocyanate groups from an NCO prepolymer, R′ represents a group which is inert to Isocyanate groups under the conditions used to form the polyurethane of in formula I, R″ represents a divalent, linear or branched aliphatic group containing 2 to 10 carbon atoms, provided that there are at least two carbons between the oxygen atoms, wherein the aliphatic group may optionally be substituted by heteroatoms to form ether or ester groups, m is 0 or 1 and n is 2 to 4.
    Type: Grant
    Filed: December 1, 2000
    Date of Patent: September 24, 2002
    Assignees: Bayer Corporation, Bayer Aktiengesellschaft
    Inventors: Harald Blum, Lyubov K. Gindin, Karen M. Henderson, Patricia B. Jacobs, Sze-Ming Lee, Brian Long, Robert A. Sylvester, Douglas A. Wicks
  • Patent number: 6455632
    Abstract: The present invention relates to aqueous polyurethane dispersions containing secondary amide groups in the backbone of the polyurethane, wherein the secondary amide groups (calculated as NH—CO—, MW 43) are present in an amount of 1 to 14% by weight, based on the weight of the polyurethanes, and correspond to the formula —X1—R1—NH—C(O)—R2—X2—  (I) wherein X1, and X2 are the same or different and represent the groups obtained by removing a hydrogen atom from a hydroxy group or a primary or secondary amino group and R1and R2 are the same or different and represent linear or branched hydrocarbon groups that are optionally substituted by groups that do not contain isocyanate-reactive hydrogen atoms. The present invention also relates to aqueous, one-component, thermoset compositions containing the polyurethanes with amide groups in the backbone and a cross-linking component that is reactive with amide groups.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: September 24, 2002
    Assignee: Bayer Corporation
    Inventors: Lyubov K. Gindin, Karen M. Henderson, Sze-Ming Lee, Brian Long
  • Patent number: 6444746
    Abstract: The present invention relates to aqueous polyurethane dispersions containing amide groups that are pendant to the backbone of the polyurethane, wherein the amide groups (calculated as NH—CO—, MW43) are present in an amount of 1 to 14% by weight, based on the weight of the polyurethanes. The present invention also relates to aqueous, one-component, thermoset compositions containing the polyurethanes with amide groups in the backbone and a cross-linking component that is reactive with amide groups. Finally, the present invention relates to coatings, sealants and adhesives prepared from these aqueous, one-component, thermoset compositions.
    Type: Grant
    Filed: December 5, 2000
    Date of Patent: September 3, 2002
    Assignee: Bayer Corporation
    Inventors: Lyubov K. Gindin, Karen M. Henderson, Sze-Ming Lee, Brian Long
  • Publication number: 20020103292
    Abstract: The present invention relates to aqueous polyurethane dispersions wherein the polyurethanes contain terminal hydrazide groups and correspond to the formula 1
    Type: Application
    Filed: December 1, 2000
    Publication date: August 1, 2002
    Inventors: Harald Blum, Lyubov K. Gindin, Karen M. Henderson, Patricia B. Jacobs, Sze-Ming Lee, Brian Long, Robert A. Sylvester, Douglas A. Wicks
  • Publication number: 20020068789
    Abstract: The present invention relates to aqueous polyurethane dispersions containing secondary amide groups in the backbone of the polyurethane, wherein the secondary amide groups (calculated as NH—CO—, MW 43) are present in an amount of 1 to 14% by weight, based on the weight of the polyurethanes, and correspond to the formula
    Type: Application
    Filed: December 5, 2000
    Publication date: June 6, 2002
    Inventors: Lyubov K. Gindin, Karen M. Henderson, Sze-Ming Lee, Brian Long
  • Publication number: 20020068790
    Abstract: The present invention relates to aqueous polyurethane dispersions containing amide groups that are pendant to the backbone of the polyurethane, wherein the amide groups (calculated as NH—CO—, MW 43) are present in an amount of 1 to 14% by weight, based on the weight of the polyurethanes.
    Type: Application
    Filed: December 5, 2000
    Publication date: June 6, 2002
    Inventors: Lyubov K. Gindin, Karen M. Henderson, Sze-Ming Lee, Brian Long
  • Patent number: 5859889
    Abstract: A sheet counter has an elongate element (18) in which is formed a suction port (19), connected to a vacuum source by a duct (26). A pressure sensor is arranged to sense the pressure in the duct, in the vicinity of the port (19), and produces an electrical signal indicative thereof. The counter is set up by sensing the pressure in the duct with the port (19) open, either with the vacuum source operating or before operation thereof, and then by sensing the pressure in the duct with the port closed and the vacuum source operating. A pressure count-value part-way between the two sensed pressures is computed and during subsequent operation of the counter, a valid count signal is generated only if the instantaneous sensed pressure in the duct falls below the computed count-value.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: January 12, 1999
    Assignee: Pelcombe Limited
    Inventor: David Brian Long
  • Patent number: 5321724
    Abstract: A line driver is coupled by a pair of signal lines to a receiver. Preprocessing circuitry, for processing signals arriving on the pair of signal lines at the receiver, includes regulating circuitry for regulating the voltage between the signal lines between predetetermined limits and thereby modifying the sensitivity of the system to compensate for changes in line conditions and reject interference when the line driver is powered down. The regulating means includes: bias circuitry, for putting a bias on the signal passing through to the receiver, so as to hold the receiver input away from the triggering voltage level so that it is not triggered by noise; and bias limiting circuitry, responsive to signals from the driver so as to limit or reduce the effective bias, so that the sensitivity of the system to true signals from the driver is not reduced below a desired level. A resistor is connected between the two signal lines.
    Type: Grant
    Filed: October 23, 1992
    Date of Patent: June 14, 1994
    Assignee: Digital Equipment Corporation
    Inventors: Brian Long, Michael J. Hynes