Patents by Inventor Michael Berkei

Michael Berkei 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).

  • Writable and printable colloidal gold solution
    Publication number: 20070166558
    Abstract: The present invention relates to an aqueous colloidal gold solution, comprising (a) nano-particular gold particles, (b) a compound having a polar tertiary amino group conjugated via a hydrophobic aromatic residue with a weaker alkaline group, and (c) a stabilizer comprising a mercapto group (—SH) and an acidic group, in particular a sulfonic acid group (—SO3?). This gold solution uses an ecologically compatible medium and is suited in an especial manner or writing and for printing, also for inkjet printers, since it has a long-term storage life and generates an attractive metal-like gold sheen.
    Type: Application
    Filed: March 15, 2007
    Publication date: July 19, 2007
    Applicant: Nanogate Coating Systems GmbH
    Inventors: Michael Berkei, Maren Korsten, Fernando Ibarra, Stephan Haubold
  • Writable and printable colloidal gold solution
    Patent number: 7211135
    Abstract: The present invention relates to an aqueous colloidal gold solution, comprising (a) nano-particular gold particles, (b) a compound having a polar tertiary amino group conjugated via a hydrophobic aromatic residue with a weaker alkaline group, and (c) a stabilizer comprising a mercapto group (—SH) and an acidic group, in particular a sulfonic acid group (—SO3?). This gold solution uses an ecologically compatible medium and is suited in an especial manner for writing and for printing, also for inkjet printers, since it has a long-term storage life and generates an attractive metal-like gold sheen.
    Type: Grant
    Filed: March 16, 2004
    Date of Patent: May 1, 2007
    Assignee: nanogate coating systems GmbH
    Inventors: Michael Berkei, Maren Korsten, Fernando Ibarra, Stephan Haubold
  • Writable and printable colloidal gold solution
    Publication number: 20050204956
    Abstract: The present invention relates to an aqueous colloidal gold solution, comprising (a) nano-particular gold particles, (b) a compound having a polar tertiary amino group conjugated via a hydrophobic aromatic residue with a weaker alkaline group, and (c) a stabilizer comprising a mercapto group (—SH) and an acidic group, in particular a sulfonic acid group (—SO3?). This gold solution uses an ecologically compatible medium and is suited in an especial manner for writing and for printing, also for inkjet printers, since it has a long-term storage life and generates an attractive metal-like gold sheen.
    Type: Application
    Filed: March 16, 2004
    Publication date: September 22, 2005
    Applicant: Nanosolutions GmbH
    Inventors: Michael Berkei, Maren Korsten, Fernando Ibarra, Stephan Haubold