Patents by Inventor Bernhard Piller

Bernhard Piller 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).

  • Method and system for the prevention of false alarms in a fire alarm system
    Patent number: 5786756
    Abstract: A fire alarm system comprises detectors with sensors for monitoring fire index quantities. The sensors generate corresponding sensor signals which are delivered to an analysis stage, in which the probability of a future false alarm is assessed and, if a defined magnitude of probability exists, an information signal is produced.
    Type: Grant
    Filed: November 23, 1994
    Date of Patent: July 28, 1998
    Assignee: Cerberus AG
    Inventor: Bernhard Piller
  • Photographic material containing sulphonic acid group containing disazo dyestuffs
    Patent number: 4118232
    Abstract: The invention is directed essentially to photographic material containing, on a carrier, a layer with azo dyestuffs of the formula ##STR1## wherein A, B, X and Y are certain substituents, in a second main aspect azo dyestuffs of the formula ##STR2## wherein B' represents certain substituents and in a third main aspect azo deystuffs of the formulaA.sub.1 --N.dbd.N--B.sub.1 --NH--CO--X.sub.1 --Y--Z.sub.1 --OC--HN--B.sub.1 --N.dbd.N--A.sub.1wherein A.sub.1, B.sub.1, X.sub.1, Z.sub.1 and Y are certain substituents.The photographic materials provide advantages stemming from the use of the dyestuffs of the invention which are distinguished by particularly high fastness to light coupled with excellent bleachability, good resistance to diffusion and advantageous color strength.
    Type: Grant
    Filed: March 15, 1977
    Date of Patent: October 3, 1978
    Assignee: Ciba-Geigy AG
    Inventors: Bernhard Piller, John Lenoir, Alfred Froehlich, Thomas Stauner, Paul Tschopp
  • Sulfonic-acid-group containing disazo dyestuffs
    Patent number: 4051123
    Abstract: In a first main aspect azo dyestuffs of the formula ##STR1## wherein A, B, X and Y are certain substituents, in a second main aspect azo dyestuffs of the formula ##STR2## wherein B' represents certain substituents and in a third main aspect azo dyestuffs of the formulaA.sub.1 --N.dbd.N--B.sub.1 --NH--CO--X.sub.1 --Y--Z.sub.1 --OC--HN--B.sub.1 --N.dbd.N--A.sub.1wherein A.sub.1, B.sub.1, X.sub.1, Z.sub.1 and Y are certain substituents as well as the use of said azo dyestuffs in photographic material are disclosed.
    Type: Grant
    Filed: August 21, 1975
    Date of Patent: September 27, 1977
    Assignee: Ciba-Geigy AG
    Inventors: Bernhard Piller, John Lenoir, Alfred Froehlich, Thomas Stauner, Paul Tschopp
  • Color photographic recording material
    Patent number: 4026709
    Abstract: The present invention relates to new compounds having an active methylene group or phenolic hydroxyl group and therefore capable of being used as photographic color couplers. The new compounds contain at least one radical of a phosphoric acid diester, phosphonic acid diester, phosphoric acid diamide, phosphonic acid diamide, phosphoric acid ester-amide or phosphonic acid ester-amide.
    Type: Grant
    Filed: April 19, 1976
    Date of Patent: May 31, 1977
    Assignee: Ciba-Geigy AG
    Inventors: Bernhard Piller, Paul Tschopp, Thomas Stauner, Walter Heierli
  • Color photographic recording material
    Patent number: 3984432
    Abstract: The present invention relates to new compounds having an active methylene group or phenolic hydroxyl group and therefore capable of being used as photographic color couplers. The new compounds contain at least one radical of a phosphoric acid diester, phosphonic acid diester, phosphoric acid diamide, phosphonic acid diamide, phosphoric acid ester-amide or phosphonic acid ester-amide.
    Type: Grant
    Filed: February 27, 1974
    Date of Patent: October 5, 1976
    Assignee: Ciba-Geigy AG
    Inventors: Bernhard Piller, Paul Tschopp, Thomas Stauner, Walter Heierli