Patents by Inventor Ralph Schäfer

Ralph Schäfer 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).

  • Publication number: 20260097436
    Abstract: The objective of the invention is to create a drilling jig for a profile sealing strand, as well as a method for producing a hole, an application head of a profile sealing strand application device, and a system for applying a profile sealing strand, each incorporating the drilling jig according to the invention as a subassembly, which enables the production of holes in the profile sealing strand directly, as needed, and without significant delay in the application process. Drilling jig for a profile sealing strand, characterized in a drilling unit is provided and that at least one guiding device is provided, through which the profile sealing strand can be guided in its longitudinal extension, wherein the guiding device is rotatable with the profile sealing strand relative to the drilling unit around a longitudinal axis of the longitudinal extension of the profile sealing strand, and that the guiding device comprises a rotational angle positioning device.
    Type: Application
    Filed: September 20, 2023
    Publication date: April 9, 2026
    Inventors: Immo Geppert, Sven Kissal, Yannis Artemi Berger, Ralph Schäfer
  • Patent number: 12281227
    Abstract: The invention relates to a rubber composition with enhanced curing and adhesion properties, comprising the following ingredients: R1—an elastomer or rubber E which is preferably a diene-based elastomer, R2—a particulate active filler which is preferably carbon black, or silica, or a combination of both, R3—a cobalt free curing or crosslinking or vulcanising system which includes sulphur, an active zinc composition ZnX having a specific surface area of from 10 m2/g to 100 m2/g, and accelerators, R4—a novolak composition NC which is a mixture of a novolak resin PA and a urethane-aldehyde resin UA?, and R5—a methylene donor, to a process to cure these rubber compositions, and to a method of use of these rubber compositions in engineered rubber products selected from the group consisting of hoses, pressure hoses, conveyor belts, gaskets, and tyres.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: April 22, 2025
    Assignees: L. Brüggemann GmbH & Co. KG, Allnex Germany GmbH
    Inventors: Ümit Özkütükcü, Anne Schulz, Stefan Mark, Ralph Schäfer
  • Patent number: 9695303
    Abstract: The invention relates to a rubber composition comprising a rubber and a processing additive wherein the processing additive is a functional reactive diluent having at least one functional group in the molecule which is not an olefinic unsaturation, to a process of compounding such rubber compositions, and to the use thereof.
    Type: Grant
    Filed: April 28, 2013
    Date of Patent: July 4, 2017
    Assignee: ALLNEX GERMANY GMBH
    Inventor: Ralph Schäfer
  • Publication number: 20150119527
    Abstract: The invention relates to a rubber composition comprising a rubber and a processing additive wherein the processing additive is a functional reactive diluent having at least one functional group in the molecule which is not an olefinic unsaturation, to a process of compounding such rubber compositions, and to the use thereof.
    Type: Application
    Filed: April 28, 2013
    Publication date: April 30, 2015
    Applicant: ALLNEX GERMANY GmbH
    Inventor: Ralph Schäfer
  • Patent number: 8759471
    Abstract: The invention relates a mixture of a urethane-aldehyde resin UA prepared by condensation of an aldehyde A1 and an alkyl urethane U, and of a novolak PA, to a process for the preparation of the said mixture, and a method of use thereof as adhesion promoter in rubber goods.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: June 24, 2014
    Assignee: Allnex Germany GmbH
    Inventors: Ralph Schäfer, Peter Ziegler
  • Publication number: 20120095152
    Abstract: The invention relates a mixture of a urethane-aldehyde resin UA prepared by condensation of an aldehyde A1 and an alkyl urethane U, and of a novolak PA, to a process for the preparation of the said mixture, and a method of use thereof as adhesion promoter in rubber goods.
    Type: Application
    Filed: May 19, 2010
    Publication date: April 19, 2012
    Applicant: Cytec Surface Specialties Germany GmbH
    Inventors: Ralph Schäfer, Peter Ziegler