Abstract: Complexes of a selected class of chiral ligands with molybdenum, tungsten or chromium, preferably molybdenum, are effective as catalysts in highly enantioselective and regioselective alkylation of allylic substrates. Such compositions provide a versatile and low-cost alternative to existing catalysts.
Type:
Grant
Filed:
December 15, 1998
Date of Patent:
October 10, 2000
Assignee:
The Board of Trustees of the Leland Stanford Junior University
Abstract: Disclosed are compositions and methods for promoting plant growth. The compounds are cyclopropyl- and cyclobutyl-substituted brassinosteroids having high growth promoting ability. They may be used alone or in combination with other plant growth regulating agents.
Type:
Grant
Filed:
March 30, 1999
Date of Patent:
May 16, 2000
Assignee:
Agritope, Inc.
Inventors:
Thomas G. Back, Richard P. Pharis, Suanne K. Nakajima
Abstract: Polymeric compositions effective for delivering compounds in living organisms are described. The compositions include polypeptides which exhibit solubility in both hydrophilic and lipophilic environments by undergoing a reversible pH-dependent transition from a low-pH, lipophilic form to a high-pH, hydrophilic form.
Abstract: A process for hot or supercritical water oxidative decomposition of wastes, particularly halogenated organic compounds, is described. The process employs a heterogeneous reagent which accelerates the decomposition and is effective to neutralize acidic byproducts. The reagent is maintained in suspension throughout the reaction by operating at conditions of temperature and pressure at which the heterogeneous reagent is largely or fully insoluble in water, and preferably at which liquid water is not present. Production of potentially corrosive brine is also minimized by operating at conditions under which sodium chloride is insoluble.
Type:
Grant
Filed:
April 29, 1998
Date of Patent:
January 4, 2000
Assignee:
SRI International
Inventors:
David S. Ross, Indira Jayaweera, David C. Bomberger, Roald N. Leif
Abstract: A method of purifying a hydrophobically substituted polynucleotide by reverse phase HPLC is described. The hydrophobic substituent may be removed from the polynucleotide under non-acidic conditions; the purification method is thus especially useful for acid sensitive polynucleotide analogs.
Type:
Grant
Filed:
September 15, 1997
Date of Patent:
December 7, 1999
Assignees:
The Perkin-Elmer Corporation, Lynx Therapeutics, Inc.
Abstract: An apparatus for polishing one or more planar substrates, such as magnetic disks, between rotating polishing plates is described. The apparatus is designed to optimize uniformity and flatness of the substrates by maintaining a substantially constant parallel and coaxial alignment between the rotating polishing plates.