Patents by Inventor Tilo Callenbach

Tilo Callenbach 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).

  • Cannula for medical syringes
    Patent number: 6355017
    Abstract: A cannula is retractably mounted with a needle holder (9) in a housing (5). A switching device (7, 8) allows the hollow needle (10) to be retracted after use into the housing (5). The needle holder (9) secures against rotation the hollow needle (10) in the housing (5) in a predetermined orientation. The housing (5) is preferably provided on its outer side with markings (13) which indicate the orientation of the hollow needle (10). The hollow needle (9) cannot twist when it is retracted. Another advantage is that the orientation of the needle point need not be determined before making an injection.
    Type: Grant
    Filed: June 18, 1999
    Date of Patent: March 12, 2002
    Assignee: H. Weidmann A.G.
    Inventors: Heinz Buttgen, Tilo Callenbach
  • CANNULA FOR MEDICAL SYRINGES
    Publication number: 20020010421
    Abstract: A cannula is retractably mounted with a needle holder (9) in a housing (5). A switching device (7, 8) allows the hollow needle (10) to be retracted after use into the housing (5). The needle holder (9) secures against rotation the hollow needle (10) in the housing (5) in a predetermined orientation. The housing (5) is preferably provided on its outer side with markings (13) which indicate the orientation of the hollow needle (10). The hollow needle (9) cannot twist when it is retracted. Another advantage is that the orientation of the needle point need not be determined before making an injection.
    Type: Application
    Filed: June 18, 1999
    Publication date: January 24, 2002
    Inventors: HEINZ BUTTGEN, TILO CALLENBACH
  • Culture dish
    Patent number: 6306646
    Abstract: The invention relates to a culture dish consisting of a plastic material and intended for growing cell and tissue cultures (6). The growth surface (5) has a micro-structure and raised areas (9) whose height (A) is less than 110 micrometres and preferably less than approximately 100 micrometres. The micro-structure (8) of the growth surface increases the cell yield, with adherent cells being both optically easily accessible and readily harvested.
    Type: Grant
    Filed: October 18, 2000
    Date of Patent: October 23, 2001
    Assignee: Weidman Plastics Technology AG
    Inventors: Bashar Saad, Tilo Callenbach
  • Automatic cannula withdrawing device for injection syringes
    Patent number: 6015396
    Abstract: An automatic needle retraction device includes a housing and retraction device for completely retracting a needle back into the housing after use. A selector switch device includes an equalization part, which produces a negative pressure to accept the fluid compressed during the retraction of the hollow needle. Thus, during retraction of the needle, compressed injection solution is not sprayed outward from the needle.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: January 18, 2000
    Assignees: H. Weidmann AG Weidmann, Daniel Vuille
    Inventors: Heinz Buttgen, Konrad Burger, Tilo Callenbach, Karl Mazenauer, Daniel Riesen, Daniel Vuille