Patents by Inventor Robert C. Szafranski

Robert C. Szafranski 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).

  • High solids low viscosity polysaccharides
    Patent number: 6054511
    Abstract: Hydroxyethylcellulose (HEC), hydrophobically modified hydroxyethylcellulose (HMHEC), hydroxypropylcellulose (HPC), methylhydroxypropylcellulose (MHPC), carboxymethylhydroxyethylcellulose (CMHEC), guar, starch, xanthan, hydroxypropylguar (HP Guar) or carboxymethylhydroxypropylguar (CMHP Guar) are stepwise or continuously reacted with hydrogen peroxide to produce aqueous compositions with a solids content greater than 5% by weight at a viscosity at 25.degree. C. below 9500 mPa.s. It is preferred to use 30-50% hydrogen peroxide to depolymerize the polysaccharide.
    Type: Grant
    Filed: January 15, 1993
    Date of Patent: April 25, 2000
    Assignee: Aqualon Company
    Inventors: J David Angerer, Jashawant Jamanadas Modi, Robert C Szafranski
  • Dual thin oxide ESD network for nonvolatile memory applications
    Patent number: 5872378
    Abstract: An Electric Static Discharge (ESD) protection network for nonvolatile memory using a high voltage dual thin oxide MOSFET. In one aspect, there is a dual oxide electric static discharge (ESD) protective network for nonvolatile memory in which ESD protection is provided using a thick oxide PFET in a thick epitaxial layer with sequence independent circuitry. The dual oxide ESD network includes a high voltage PFET ESD network for 12 V to 5 V applications as well as a low voltage PFET network 5 V to 3 V applications taking advantage of dual oxides supported by the disclosed technology. The circuit saves space, is migratable, improves reliability, and it is voltage differential independent.
    Type: Grant
    Filed: April 7, 1997
    Date of Patent: February 16, 1999
    Assignee: International Business Machines Corporation
    Inventors: Russell E. Rose, Robert C. Szafranski, Steven H. Voldman
  • Process of preparing high solids low viscosity polysaccharides
    Patent number: 5480984
    Abstract: Hydroxyethylcellulose (HEC), hydrophobically modified hydroxyethylcellulose (HMHEC), hydroxypropylcellulose (HPC), methylhydroxypropylcellulose (MHPC), carboxymethylhydroxyethylcellulose (CMHEC), guar, starch, xanthan, hydroxypropylguar (HP Guar) or carboxymethylhydroxypropylguar (CMHP Guar) are stepwise or continuously reacted with hydrogen peroxide to produce aqueous compositions with a solids content greater than 5% by weight at a viscosity at 25.degree. C. below 9500 mPa.s. It is preferred to use 30 to 50% hydrogen peroxide to depolymerize the polysaccharide.
    Type: Grant
    Filed: February 11, 1992
    Date of Patent: January 2, 1996
    Assignee: Aqualon Company
    Inventors: John D. Angerer, Jashawant J. Modi, Robert C. Szafranski