Patents by Inventor Walter Schaffner

Walter Schaffner 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).

  • Curb-climbing power wheelchair
    Publication number: 20050127631
    Abstract: A mid-wheel drive power wheelchair for use by handicapped and disabled persons is provided having a frame, a seat supported by the frame, a pair of drive wheels supported on the frame under the seat, drive means for causing rotation of the drive wheels, power means for supplying power to the drive means, a rearward idler wheel, a forward anti-tip device and a resilient suspension supporting the forward anti-tip device, the suspension being attached to the drive means rearward of the front portion of the frame.
    Type: Application
    Filed: December 11, 2004
    Publication date: June 16, 2005
    Inventor: Walter Schaffner
  • Enhancer for eukaryotic expression systems
    Patent number: 6218140
    Abstract: An enhancer has been located in the upstream region of the major immediate early gene of human cytomegalovirus and has been isolated, which enhancer is more active than that from SV40 and has a wide host cell spectrum. Hence, it is suitable for eukaryotic expression systems wherein it can be incorporated upstream or downstream of the structural gene or of the regulation region.
    Type: Grant
    Filed: November 9, 1994
    Date of Patent: April 17, 2001
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Bernhard Fleckenstein, Walter Schaffner, Frank Weber, Karoline Dorsch-Häsler, Gerhard Jahn, Michael Boshart
  • Enhancer for eukaryotic expression systems
    Patent number: 5849522
    Abstract: An enhancer has been located in the upstream region of the major immediate early gene of human cytomegalovirus and has been isolated, which enhancer is more active than that from SV40 and has a wide host cell spectrum. Hence, it is suitable for eukaryotic expression systems wherein it can be incorporated upstream or downstream of the structural gene or of the regulation region.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: December 15, 1998
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Bernhard Fleckenstein, Walter Schaffner, Frank Weber, Karoline Dorsch-Hasler, Gerhard Jahn, Michael Boshart
  • Electrically-powered scooter for personal transport
    Patent number: 5695021
    Abstract: An electrically-powered scooter vehicle for use by elderly, disabled and infirm people includes a self-locking connection means for connecting front and rear frame portions of the scooter. The scooter is convertible between three-wheel and four-wheel versions without use of tools. Automatic shut-off circuity minimizes inadvertent loss of battery power due to failure to turn off the scooter. An adjustably lockable telescoping tiller facilitates use of the scooter by persons of all sizes.
    Type: Grant
    Filed: November 12, 1993
    Date of Patent: December 9, 1997
    Assignee: Pride Health Care, Inc.
    Inventors: Walter Schaffner, Walter Kochan, Carl Kollar
  • Eukaryotic expression vectors with multimeric enhancer segments, a process for the preparation thereof and the use thereof
    Patent number: 4983518
    Abstract: The present invention provides a eukaryotic expression vector containing a gene to be expressed and a TATA box, whereby, 1-200 bp base pair (bp) upstream (5') of the TATA box, there is a first multimeric enhancer segment and 1-100 bp below (3') the gene to be expressed there is provided a second multimeric enhancer segment. The present invention also provides a process for the preparation of this expression vector. Furthermore, the present invention is concerned with the use of this expression vector.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: January 8, 1991
    Assignee: Boehringer Mannheim GmbH
    Inventors: Walter Schaffner, Nils G. Westin
  • Deoxyribonucleic acid segment from a virus
    Patent number: 4968615
    Abstract: Deoxyribonucleic acid (DNA) molecules consisting of or recombinant DNA molecules containing transcription enhancers from murine cytomegalovirus (MCMV) which can be used to enhance the transcription of structural genes in eukaryotic cells.
    Type: Grant
    Filed: December 18, 1985
    Date of Patent: November 6, 1990
    Assignee: CIBA-GEIGY Corporation
    Inventors: Ulrich H. Koszinowski, Gunther M. Keil, Karoline Dorsch-Hasler, Walter Schaffner
  • Chair control
    Patent number: D384939
    Type: Grant
    Filed: April 10, 1996
    Date of Patent: October 14, 1997
    Assignee: Pride Health Care, Inc.
    Inventor: Walter Schaffner
  • Motorized wheelchair
    Patent number: D397645
    Type: Grant
    Filed: July 3, 1996
    Date of Patent: September 1, 1998
    Assignee: Pride Health Care, Inc.
    Inventor: Walter Schaffner