Patents by Inventor Rolf Schafer

Rolf Schafer 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: 20260107944
    Abstract: The present invention relates to ophthalmic formulations wherein a synergistic combination of three different classes of disinfectants (a multimeric biguanide compound, a quaternary ammonium compound and an antifungal/anti-acanthamoeba compound, in particular a combination of polyhexamethylene biguanide, Polyquaternium-1 and myristamidopropyl dimethylamine) enables the use of high concentrations of hyaluronate for providing better comfort and support of corneal health without compromising antimicrobial efficacy. The novel ophthalmic formulations support the use of more than 7.5 times higher concentrations of hyaluronate than are present in currently marketed multi-purpose disinfection solutions.
    Type: Application
    Filed: December 19, 2025
    Publication date: April 23, 2026
    Inventors: Christian GERATHS, Rolf SCHAFER
  • Patent number: 12527327
    Abstract: The present invention relates to ophthalmic formulations wherein a synergistic combination of three different classes of disinfectants (a multimeric biguanide compound, a quaternary ammonium compound and an antifungal/anti-acanthamoeba compound, in particular a combination of polyhexamethylene biguanide, Polyquaternium-1 and myristamidopropyl dimethylamine) enables the use of high concentrations of hyaluronate for providing better comfort and support of corneal health without compromising antimicrobial efficacy. The novel ophthalmic formulations support the use of more than 7.5 times higher concentrations of hyaluronate than are present in currently marketed multi-purpose disinfection solutions.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: January 20, 2026
    Assignee: CIS Biopharma AG
    Inventors: Christian Geraths, Rolf Schafer
  • Publication number: 20230148604
    Abstract: The present invention relates to ophthalmic formulations wherein a synergistic combination of three different classes of disinfectants (a multimeric biguanide compound, a quaternary ammonium compound and an antifungal/anti-acanthamoeba compound, in particular a combination of polyhexamethylene biguanide, Polyquaternium-1 and myristamidopropyl dimethylamine) enables the use of high concentrations of hyaluronate for providing better comfort and support of corneal health without compromising antimicrobial efficacy. The novel ophthalmic formulations support the use of more than 7.5 times higher concentrations of hyaluronate than are present in currently marketed multi-purpose disinfection solutions.
    Type: Application
    Filed: December 4, 2020
    Publication date: May 18, 2023
    Inventors: Christian GERATHS, Rolf SCHAFER
  • Patent number: 8313411
    Abstract: The invention relates to a backlash-free planetary gear unit comprising a sun gear, an internal gear and at least one planet gear which is in mesh with said sun gear and said internal gear and which is arranged on a planet carrier such that it is rotatable about a planetary axis of rotation, wherein the toothed planet gear has a plane of division which is oriented perpendicular to the planetary axis of rotation and by means of which the planet gear is divided into a first planet subgear and a second planet subgear, wherein the first planet subgear is preloaded relative to the second planet subgear by a spring bar arranged in these two planet subgears substantially parallel to the planetary axis of rotation, and wherein a plurality of spring bars is arranged around the planetary axis of rotation.
    Type: Grant
    Filed: February 9, 2009
    Date of Patent: November 20, 2012
    Assignee: Maxon Motor AG
    Inventor: Rolf Schafer
  • Publication number: 20100240490
    Abstract: The invention relates to a backlash-free planetary gear unit comprising a sun gear, an internal gear and at least one planet gear which is in mesh with said sun gear and said internal gear and which is arranged on a planet carrier such that it is rotatable about a planetary axis of rotation, wherein the toothed planet gear has a plane of division which is oriented perpendicular to the planetary axis of rotation and by means of which the planet gear is divided into a first planet subgear and a second planet subgear, wherein the first planet subgear is preloaded relative to the second planet subgear by a spring bar arranged in these two planet subgears substantially parallel to the planetary axis of rotation, and wherein a plurality of spring bars is arranged around the planetary axis of rotation.
    Type: Application
    Filed: February 9, 2009
    Publication date: September 23, 2010
    Applicant: MAXON MOTOR AG
    Inventor: Rolf Schafer
  • Publication number: 20080238123
    Abstract: The invention relates to a vehicle seat with a back rest having a frame (2) and a lordosis support (6), with the following additional configuration: The lordosis support (6) comprises a pressure plate (9) that is essentially bend resistant in at least the transverse direction of the seat or the Y-direction, forms a supporting surface in the lordosis region of the back rest and is arranged between two side frame parts (3) of the frame (2); there is at least one holding element (5a, 5b) that extends between the side frame parts (3) with a length-variable adjustment section (21), which runs in the Y-direction and connects to the pressure plate (9), and is affixed there at fixing points (30) arranged opposite each other; in an inoperative position, the pressure plate (9) is arranged with a horizontal clearance (11) or a clearance in the X-direction behind the fixing points (30); there is a driving device with which the length of the adjustment section can be shortened as the horizontal clearance is reduced.
    Type: Application
    Filed: April 8, 2006
    Publication date: October 2, 2008
    Applicants: Alfmeier Prazision AG Baugrupper Und SystemLosungen, IMS Gear GmbH
    Inventors: Rolf Schafer, Torsten Aeugle, Andrew Massara, Jurgen Hofmockel, Wolfram-H. Hofschulte, Urban Knopfle, Michael Wohrle
  • Publication number: 20060226683
    Abstract: An adjustable lumbar support for a seat having a seat frame is disclosed, the adjustable lumbar support including a floating support plate for providing an amount of lumbar support to a lumbar region of a seat, the support plate having a front surface and a rear surface, the floating support plate being attached to the seat frame via springs, the provided lumbar support defining an apex. A first actuator assembly and a second actuator assembly are each operatively connected to the floating support plate via respective first and second cables, the first and second cables being spaced from each other substantially vertically within the floating support plate, the first and second actuator assemblies for selectively actuating the respective cables to selectively move the apex substantially vertically and substantially horizontally forward and back relative to the seat frame. A secondary support plate may be provided, and may be hingedly and/or floatingly mounted.
    Type: Application
    Filed: April 8, 2005
    Publication date: October 12, 2006
    Inventors: Andrew Massara, Brandon Vogt, Rolf Schafer
  • Publication number: 20050280299
    Abstract: Adaptors are disclosed for a seat assembly. The adaptors may be used for mounting a support extending substantially across a frame between first and second side members. The adaptor may be attachable to an opening in the frame. The support may include a hook having a bending distal end. The adaptor includes a non-metal body including a mounting structure configured for attaching the body to the opening in the frame, a passageway extending through the body for receiving the hook, and a seat within the body for securing the bending distal end of the hook to the adaptor. The mounting structure is configured so that when the support is loaded the adaptor is loaded by the hook substantially in compression. Alternatively, other designs with the loading in compression or tension are possible whereby the adaptor includes other combinations of features. Seat assemblies are also disclosed. The support may be a seat back or bottom, or a lumbar support. Methods of assembly are also disclosed.
    Type: Application
    Filed: June 18, 2004
    Publication date: December 22, 2005
    Inventors: Brandon Vogt, Andrew Massara, Rolf Schafer, Wolfgang Beyerlein
  • Patent number: 5696481
    Abstract: To record times and intermediate times at sporting events, especially large and multi-discipline events, a method is proposed for immediately establishing the result, by which a large number of recording stations are positioned along the competition track which are connected to a central station, which evaluates the arriving information in a wireless or wire-bound manner, that every recording station has a frame antenna to absorb energy in the high-frequency range as well as to receive high-frequency signals and each athlete is handed a passive high-frequency transmitter with a personal code, which he holds in the recording station when the respective station is reached, whereby the recording station first re-charges the high-frequency transmitter via an antenna, afterwards the high-frequency transmitter passes the code to the recording station, the code is received by the recording station and is immediately passed with a further code from the recording station to the central station, where evaluation is car
    Type: Grant
    Filed: July 2, 1996
    Date of Patent: December 9, 1997
    Inventors: Wolfram Pejas, Rolf Schafer
  • Patent number: 5672575
    Abstract: A contact lens cleaning solution containing an enzyme having proteolytic activity and a surfactant, and optionally also a chelating agent and urea, and a method of cleaning contact lenses utilizing this solution are described. The solution and method effectively remove deposits of proteinaceous material, mucins, lipids and calcium located either on or beneath the surface of the lens.
    Type: Grant
    Filed: April 29, 1994
    Date of Patent: September 30, 1997
    Assignee: Alcon Laboratories, Inc.
    Inventor: Rolf Schafer
  • Patent number: 5627214
    Abstract: Certain alkenyl diamines, the use of same for disinfecting and cleaning contact lenses and preserving ophthalmic products, and associated ophthalmic compositions are described.
    Type: Grant
    Filed: February 16, 1995
    Date of Patent: May 6, 1997
    Assignee: Alcon Laboratories, Inc.
    Inventors: Rolf Schafer, Ronald L. Schlitzer, Nissanke L. Dassanayake
  • Patent number: 5415837
    Abstract: Certain alkenyl diamines, the use of same for disinfecting and cleaning contact lenses and preserving ophthalmic products, and associated ophthalmic compositions are described.
    Type: Grant
    Filed: October 25, 1993
    Date of Patent: May 16, 1995
    Assignee: Alcon Laboratories, Inc.
    Inventors: Rolf Schafer, Ronald L. Schlitzer, Nissanke L. Dassanayake
  • Patent number: 5318717
    Abstract: A contact lens cleaning solution containing an enzyme having proteolytic activity and a surfactant, and optionally also a chelating agent and urea, and a method of cleaning contact lenses utilizing this solution are described. The solution and method effectively remove deposits of proteinaceous material, mucins, lipids and calcium located either on or beneath the surface of the lens.
    Type: Grant
    Filed: July 17, 1992
    Date of Patent: June 7, 1994
    Assignee: Alcon Laboratories, Inc.
    Inventor: Rolf Schafer
  • Patent number: 5002751
    Abstract: Highly-coercive isometric iron oxide useful in magnetic toners for electrostatic photo-copying processes or for magnetic printers is produced by(a) subjecting Fe.sub.3 O.sub.4 pigment produced in a wet process to oxidation and(b) subsequently reducing the oxidized pigment from (a) to produce highly-coercive Fe.sub.3 O.sub.4 pigment.
    Type: Grant
    Filed: August 21, 1985
    Date of Patent: March 26, 1991
    Assignee: Bayer Aktiengesellschaft
    Inventors: Jurgen Wiese, Gunter Buxbaum, Rolf Schafer, Fritz Rodi
  • Patent number: 4908206
    Abstract: From organs of embryonic mammalia a new extract of active ingredients is recovered which extract can be used for controlling a reduced blood flow through periperhic organs and through the brain and which extract can be also used for controlling acne vulgaris. The corresponding extracts are used as active ingredients of corresponding pharmaceutical preparations.The new pharmaceutically active extract is prepared according to a process in which polar substances having a molecular weight below 5000 are isolated from the embryonic mammalian organs avoiding any degradation of substances having a higher molecular weight. The finely divided embryonic mammalian organs are extracted with a mixture of water and a water soluble organic solvent which contains nor more than 30 vol.-% of water at an about neutral pH value for stirring and refluxing.
    Type: Grant
    Filed: September 10, 1987
    Date of Patent: March 13, 1990
    Assignee: Amics AG
    Inventors: Rolf Schafer, Hans Hitz
  • Patent number: 4818440
    Abstract: Novel surfactant compounds are provided of the formula R--CO--NH--(C.sub.2 H.sub.4 O).sub.n --CH.sub.2 COOH, wherein R--CO-- is the residue of at least one aliphatic carboxylic acid of 6-22 carbon atoms and n represents a number having an average of 2-10, as well as their salts with alkali metals, ammonium and amines. These compounds possess not only a low primary toxicity, but also a low secondary toxicity for the skin, and accordingly they are especially useful in cosmetic compositions, compositions for non-automatic dishwashing and laundering compositions for the fine laundry.
    Type: Grant
    Filed: August 16, 1983
    Date of Patent: April 4, 1989
    Assignee: Stamicarbon B.V.
    Inventors: Werner Schafer, Rolf Schafer, Doris Schafer, Johan G. Aalbers, Jacob K. Smid
  • Patent number: 4808239
    Abstract: Nontoxic, aqueous, contact lens cleaning compositions containing a weakly anionic surfactant, and optionally also a chelating agent, urea and/or a source of hydrated protons, and methods of chemically removing protein, lipid and calcium deposits from contact lens utilizing these compositions are described.
    Type: Grant
    Filed: May 22, 1987
    Date of Patent: February 28, 1989
    Assignee: Alcon Laboratories, Inc.
    Inventors: Doris Schafer, Rolf Schafer
  • Patent number: 4705991
    Abstract: A method of operating a high-pressure metal vapor discharge lamp at a periodic operating voltage of more than 500 Hz wherein the operating voltage is suddenly varied in phase at intervals, and preferably also wobbled in frequency, in order to avoid acoustic resonances in the lamp.
    Type: Grant
    Filed: May 27, 1982
    Date of Patent: November 10, 1987
    Assignee: U.S. Philips Corporation
    Inventors: Hans G. Ganser, Reinhard Kersten, Rolf Schafer, Hans P. Stormberg
  • Patent number: 4617186
    Abstract: A sustained release drug delivery system suitable for ophthalmic use is described. The delivery system utilizes a cationic polymer (polyquat) to deliver a drug residue. The drug residue delivered may comprise an anionic drug or a drug-carrier complex.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: October 14, 1986
    Assignee: Alcon Laboratories, Inc.
    Inventors: Doris Schafer, Rolf Schafer
  • Patent number: 4609493
    Abstract: A contact lens cleaning solution containing an enzyme having proteolytic activity and a surfactant, and optionally also a chelating agent and urea, and a method of cleaning contact lenses utilizing this solution are described. The solution and method effectively remove deposits of proteinaceous material, mucins, lipids and calcium located either on or beneath the surface of the lens.
    Type: Grant
    Filed: December 28, 1984
    Date of Patent: September 2, 1986
    Assignee: Alcon Laboratories, Inc.
    Inventor: Rolf Schafer