Patents by Inventor Coriolan Razvan

Coriolan Razvan 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).

  • Basic calcium aluminum hydroxy phosphites, a process for their production and their use
    Patent number: 5356982
    Abstract: The invention describes basic calcium aluminum hydroxy phosphites of the general formulaCa.sub.x Al.sub.2 (OH).sub.2(x+3-y) (HPO.sub.3).sub.y.mH.sub.2 Owhereinx=2-12, ##EQU1## and m=0-12,with the proviso that y.noteq.1, if x=2-8.The compounds according to the invention are particularly suited as stabilizers for halogen-containing polymers, in particular PVC.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: October 18, 1994
    Assignee: Barlocher GmbH
    Inventors: Coriolan Razvan, Reinhard Beck, Alfred Kurzinger, Michael Rosenthal, Albert W. Purzer
  • Basic calcium aluminum hydroxide dicarboxylates, a process for their production and their use
    Patent number: 5312941
    Abstract: The invention describes basic calcium aluminum hydroxide dicarboxylates of the general formulaCa.sub.x Al.sub.2 (OH).sub.2(x+3-y) A.sub.y .multidot.m H.sub.2 Owhereinx means 2 to 12, ##EQU1## m means 0 to 12, and A means an aliphatic, aromatic or heteroaromatic dicarboxylic acid anion or combinations thereof,with the proviso that y.noteq. 1, if x= 2-8and a process for their production.The compounds according to the invention are particularly suited as stabilizers for halogen-containing thermoplastic resins, in particular PVC.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: May 17, 1994
    Assignee: Barlocher GmbH
    Inventors: Coriolan Razvan, Reinhard Beck, Alfred Kurzinger, Michael Rosenthal, Albert W. Purzer
  • Basic calcium aluminum hydroxy phosphites, a process for their production and their use
    Patent number: 5298545
    Abstract: The invention describes basic calcium aluminum hydroxy phosphites of the general formulaCa.sub.x Al.sub.2 (OH).sub.2(x+2) HPO.sub.3 .multidot.mH.sub.2 Owhereinx=2-8 andm=0-12and a process for their production.The compounds according to the invention are especially suited as stabilizers for halogen-containing polymers, in particular PVC.
    Type: Grant
    Filed: June 19, 1992
    Date of Patent: March 29, 1994
    Assignee: Baerlocher GmbH
    Inventors: Coriolan Razvan, Reinhard Beck, Albert Puerzer, Alfred Kuerzinger, Michael Rosenthal
  • Basic calcium aluminum hydroxide dicarboxylates, a process for their production and their use
    Patent number: 5241094
    Abstract: The invention describes basic calcium aluminum hydroxide dicarboxylates of the general formulaCa.sub.x Al.sub.2 (OH).sub.2(x+2) A . m H.sub.2 Owhereinx means 2-8,m means 0-12 andA means an aliphatic, aromatic or heteroaromatic dicarboxylic acid anion or combinations thereofand a process for their production.The compounds according to the invention are especially suited as stabilizers for halogen-containing, thermoplastic resins, in particular PVC.
    Type: Grant
    Filed: July 21, 1992
    Date of Patent: August 31, 1993
    Assignee: Baerlocher GmbH
    Inventors: Coriolan Razvan, Reinhard Beck, Alfred Kuerzinger, Albert W. Puerzer, Michael Rosenthal