Now showing items 11-13 of 13
Formation of Reissert compound of bisbenzimidazole
(United States Patent and Trademark Office, 1991-06-04)
A Reissert compound of bisbenzimidazole can be formed by first reacting benzimidazole with an aliphatic diacid chloride to form bisbenzimidazole and then reacting the bisbenzimidazole with an aliphatic acid chloride and ...
Ophthalmic contact lens with internal fixation light for examination of the optic nerve
(United States Patent and Trademark Office, 1991-06-18)
An instrument and method for examining the optic nerve head (34) of a patient's eye (14) is disclosed. The instrument is comprised of a gonioscopic lens (10) a lens system (26) where the lens system (26) directs a collimated ...
Supported aqueous phase organometallic catalyst useful for hydroformylation and other reactions, and a method for its preparation
(United States Patent and Trademark Office, 1991-02-19)
This invention relates to a catalyst comprising a solid surface having immobilized thereon an aqueous solution of one or more organic complexes of rhodium. The catalyst is useful for promoting hydroformylation, hydrogenation ...