Patents by Inventor Manfred Reichrath

Manfred Reichrath 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).

  • Photochemicals with reduced dust formation
    Patent number: 5258268
    Abstract: Photographic processing chemicals in solid form containing the necessary active ingredients and auxiliary substances and in addition at least one compound corresponding to formula (I)HO--R--O.sub.n H (I)whereinR denotes C.sub.2 -C.sub.4 -alkyl andn denotes 1-200or at least one compound corresponding to the following formulaR.sub.1 --OH (II)whereinR.sub.1 denotes C.sub.10 --C.sub.18 -alkylor at least one water-soluble polymer, e.g. selected from polystyrene sulphonic acid and polyvinyl alcohol, or a mixture of at least two of the above mentioned compounds in a quantity of from 0.5 to 100 g/kg of solid substance are dust free or relatively dust free.
    Type: Grant
    Filed: July 26, 1991
    Date of Patent: November 2, 1993
    Assignee: Agfa Gevaert Aktiengesellschaft
    Inventors: Karl-Heinz Reuter, Manfred Reichrath, Heinz Meckl