Patents by Inventor Ian Victor E. Hassall

Ian Victor E. Hassall 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).

  • Patent number: 6013197
    Abstract: The invention relates to copolymers made from mono-reactive liquid and/or di-reactive liquid crystals which can be photopolymerized to form copolymers and to novel reactive liquid crystal compound having a nematic phase. Preferentially the reactive liquid crystal is polymerized while in the liquid crystal phase to produce an oriented birefringent polymer film. To do this, the reactive liquid crystal, in its nematic or smectic phase is aligned (by well known techniques such as rubbed polyimide, etc.) and the thin film containing a small amount of photoinitiator, is subjected to ultraviolet light whereupon it polymerizes into a thin, aligned polymer film.
    Type: Grant
    Filed: December 8, 1997
    Date of Patent: January 11, 2000
    Assignee: Merck Patent Gesellschaft mit Beschrankter Haftung
    Inventors: Owain Llyr Parri, Ian Bonny, Ian Victor E. Hassall, Mark John Goulding, Simon Greenfield, Emma Jane Brown, David Coates
  • Patent number: 5720900
    Abstract: The invention relates to copolymers made from mono-reactive liquid and/or di-reactive liquid crystals which can be photopolymerized to form copolymers and to novel reactive liquid crystal compound having a nematic phase. Preferentially the reactive liquid crystal is polymerized while in the liquid crystal phase to produce an oriented birefringent polymer film. To do this, the reactive liquid crystal, in its nematic or smectic phase is aligned. (by well known techniques such as rubbed polyimide, etc.) and the thin film containing a small amount of photoinitiator, is subjected to ultraviolet light whereupon it polymerizes into a thin, aligned polymer film.
    Type: Grant
    Filed: February 22, 1996
    Date of Patent: February 24, 1998
    Assignee: Merck Patent Gesellschaft mit beschrankter Haftung
    Inventors: Owain Llyr Parri, Ian Bonny, Ian Victor E. Hassall, Mark John Goulding, Simon Greenfield, Emma Jane Brown, David Coates