Patents by Inventor Alfred E. Milch

Alfred E. Milch 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).

  • Recording structure for direct read after write recording
    Patent number: 4379299
    Abstract: An information recording medium uses a semiconductor film on a plastic substrate for obtaining a direct read after write digital recording with laser recording and writing devices. The writing laser produces an area of generated heat in the semiconductor film which produces a heated region in the underlying plastic substrate. The heated plastic substrate material decomposes or degases yielding gaseous components with a high pressure that will burst the overlying semiconductor layer leaving a pit or hole in the reflective surface.
    Type: Grant
    Filed: April 6, 1981
    Date of Patent: April 5, 1983
    Assignee: North American Philips Corporation
    Inventors: Brian J. Fitzpatrick, Rameshwar N. Bhargava, Alfred E. Milch, Pedro Tasaico