Patents by Inventor David W. Abmayr

David W. Abmayr 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: 11965085
    Abstract: A multilayer structure can include at least one layer that comprises an ethylene propylene diene copolymer compound that comprises: 60 parts per hundred rubber (phr) to 95 phr of a first ethylene propylene diene copolymer (EP(D)M) having an ethylene content of 62 wt % to 90 wt % based on the first EP(D)M and a heat of fusion (Hf) of 15 J/g or greater; 5 phr to 40 phr of an second EP(D)M having an ethylene content of 40 wt % to 60 wt % based on the second EP(D)M and a Hf of 0 J/g to 14 J/g, wherein the Hf of the first EP(D)M minus the Hf of the second EP(D)M is 5 J/g or greater; wherein the first EP(D)M and second EP(D)M combined are 100 parts; a filler at 40 phr to 500 phr; and a curing agent at 0.5 phr to 20 phr.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: April 23, 2024
    Assignee: ExxonMobil Engineering & Technology Company
    Inventors: Zhifeng Bai, Scott H. Loyd, Narayanaswami Dharmarajan, Rainer Kolb, David W. Abmayr, Jr., Khodabakhsh Irani
  • Publication number: 20220290014
    Abstract: An elastomeric composition suitable for use in belts like transmission belts may comprise: from 5 to 100 phr of a propylene-?-olefin-diene (PEDM) terpolymer comprising 80 wt % to 97.5 wt % propylene, 2.5 wt % to 20 wt % a-olefin, and 0.5 wt % to 10 wt % diene, said wt % based on the weight of the PEDM terpolymer, and wherein the PEDM terpolymer has (a) Mooney viscosity (ML(1+4)) of 1 MU to 60 MU, (b) melt flow rate of 0.5 g/min to 100 g/min, and (c) a weight average molecular weight to n-average molecular weight (Mw/Mn) ratio of 1.5 to 3.0; and from 60 to 95 phr of an ethylene-based copolymer comprising 0 wt % to 95 wt % ethylene, 0 wt % to 10 wt % of one or more dienes, and 5 wt % to 60 wt % C3 to C12 ?-olefin, said wt % based on the total weight of the ethylene-based copolymer.
    Type: Application
    Filed: July 17, 2020
    Publication date: September 15, 2022
    Inventors: Zhifeng Bai, Scott H. Loyd, Narayanaswami Dharmarajan, David W. Abmayr, JR., Brian J. Rohde, Jason A. Mann
  • Publication number: 20220119633
    Abstract: A multilayer structure can include at least one layer that comprises an ethylene propylene diene copolymer compound that comprises: 60 parts per hundred rubber (phr) to 95 phr of a first ethylene propylene diene copolymer (EP(D)M) having an ethylene content of 62 wt % to 90 wt % based on the first EP(D)M and a heat of fusion (Hf) of 15 J/g or greater; 5 phr to 40 phr of an second EP(D)M having an ethylene content of 40 wt % to 60 wt % based on the second EP(D)M and a Hf of 0 J/g to 14 J/g, wherein the Hf of the first EP(D)M minus the Hf of the second EP(D)M is 5 J/g or greater; wherein the first EP(D)M and second EP(D)M combined are 100 parts; a filler at 40 phr to 500 phr; and a curing agent at 0.5 phr to 20 phr.
    Type: Application
    Filed: January 10, 2020
    Publication date: April 21, 2022
    Inventors: Zhifeng Bai, Scott H. Loyd, Narayanaswami Dharmarajan, Rainer Kolb, David W. Abmayr, JR., Khodabakhsh Irani
  • Patent number: 5325532
    Abstract: A computer system which includes certain minimum capabilities in a system ROM. Device driver software is located in the system ROM or adapter ROM's. On boot the computer system collects these device drivers from ROM to develop a minimal system. If a removable medium such as a floppy disk or CD-ROM is present a configuration mode is entered when final driver files and operating system modules are stored on a selected hard disk. After this storage the device driver modules and operating system modules necessary to develop a boot image of the operating system are gathered and linked. The boot image is generated and stored, allowing use on the following boot operations. The computer system detects device changes and rebuilds the boot image as necessary. If the devices have remained the same the previously stored boot image is loaded and operating system execution commences.
    Type: Grant
    Filed: September 25, 1992
    Date of Patent: June 28, 1994
    Assignee: Compaq Computer Corporation
    Inventors: Wm. Caldwell Crosswy, Dwight L. Barron, David W. Abmayr, Harvey M. Rosenblum, David M. Burckhartt
  • Patent number: 4349695
    Abstract: The specification discloses a system and method for authenticating a message recipient prior to transmission of a message and for authenticating the message content after receipt of the message. A randomized character or character sequence is initially enciphered at the authenticator station and stored. The enciphered character is transmitted to the message recipient. The enciphered character is deciphered by the message recipient to reproduce the randomized character. The randomized character is reenciphered by the message recipient and transmitted back to the authenticator station. The reenciphered character is deciphered and the stored randomized character is compared with the deciphered character. The message recipient is authenticated if the stored randomized character exactly compares with the deciphered character. In order to authenticate the message after receipt, polynomial block check characters are accumulated from the message.
    Type: Grant
    Filed: June 25, 1979
    Date of Patent: September 14, 1982
    Assignee: Datotek, Inc.
    Inventors: Barrie O. Morgan, David W. Abmayr
  • Patent number: 4223381
    Abstract: A selective memory addressing scheme employs a programmable read only memory (PROM) which responds to the opcode of the next instruction to be executed and supplies control information to memory module selection registers.The memory module selection registers operate in conjunction with the internal address registers to provide the necessary steering information for properly addressing the intended memory location. The PROM is programmed in accordance with the instruction set by which the processor operates and is coupled to decode the opcode contents of the instruction register that has been loaded, in a lookahead fashion, with the instruction following the instruction presently being executed by the central processing unit.The PROM has a first output that defines whether or not a second output of the PROM is to be used to select the memory module containing the operand to be referenced in the execution of the next instruction.
    Type: Grant
    Filed: June 30, 1978
    Date of Patent: September 16, 1980
    Assignee: Harris Corporation
    Inventors: James O. Rozell, David W. Abmayr