The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 16, 2012
Filed:
Jun. 15, 2005
Mark Verrall, Shilin, TW;
Kim Slaney, Christchurch, GB;
Owain Llyr Parri, Ringwood, GB;
Richard Harding, Hants, GB;
Shirley Ann Marden, Poole Dorset, GB;
Mark Verrall, Shilin, TW;
Kim Slaney, Christchurch, GB;
Owain Llyr Parri, Ringwood, GB;
Richard Harding, Hants, GB;
Shirley Ann Marden, Poole Dorset, GB;
Merck Patent Gesellschaft mit Beschränkter Haftung, Darmstadt, DE;
Abstract
The invention relates to an optically biaxial film comprising an anisotropic material with uniform helically twisted structure and a reflection wavelength below 400 nm, to methods and materials for its preparation, to its use as retardation or compensation film in optical devices like liquid crystal displays, and to compensators and liquid crystal displays comprising such a biaxial film.