Search
Now showing items 1-10 of 50
Metalorganic chemical vapor deposition of ferroelectric thin films
(United States Patent and Trademark Office, 1995-07-11)
A method to produce high quality doped and undoped lead zirconate titanate (PZT) thin films by metalorganic chemical vapor deposition is disclosed. The PZT thin films with the perovskite structure were deposited on sapphire ...
Hydrogen-selective silica-based membrane
(United States Patent and Trademark Office, 2005-02-15)
A hydrogen permselective membrane, a method of forming a permselective membrane and an apparatus comprising a permselective membrane, a porous substrate and an optional intermediate layer are described. Using chemical vapor ...
Chemical modification of shaped hydrogels in non-aqueous medium
(United States Patent and Trademark Office, 1996-06-25)
A method is described for the chemical modification of pre-shaped hydrogels in non-aqueous medium. The conditions permit the reaction of highly expanded, porous hydrogel particles, such as spherical beads, using pseudo ...
Mixing process for generating in-situ reinforced thermoplastics
(United States Patent and Trademark Office, 1993-07-06)
A method for blending polymeric materials includes the steps of producing a melt stream of a first polymer from a first extruder (12) and a separate melt stream of a second polymer from a second extruder (14), joining the ...
Zero-voltage-transition (ZVT) 3-phase PWM voltage link converters
(United States Patent and Trademark Office, 1996-11-12)
An improved zero voltage transition (ZVT) pulse width modulation (PWM) link converter is provided which introduces a space vector modulation scheme and an auxiliary circuit which includes a commutation power supply or ...
Method of producing prepolymers from hydroxyalkyl lignin derivatives
(United States Patent and Trademark Office, 1992-04-07)
A method of producing prepolymeric materials from lignin is disclosed. The method uses lignin which has been hydroxyalkyl modified, such that the lignin is substantially non-phenolic and solvent soluble and/or liquid. The ...
Reduced operator emission exposure antennas for safer hand-held radios and cellular telephones
(United States Patent and Trademark Office, 1996-07-30)
An antenna for a personal communication device designed for reducing RF emissions to a user's head and body comprises a single half-wave dipole antenna element mounted on the top of a telescoping rod such that the antenna ...
Microbubble generator
(United States Patent and Trademark Office, 1994-05-24)
Means are provided for supplying a liquid surfactant solution, for supplying a gas under pressure, for mixing the liquid surfactant solution and the pressurized gas to form a liquid coarse dispersion of relatively large ...
Complex situation analysis system that generates a social contact network, uses edge brokers and service brokers, and dynamically adds brokers
(United States Patent and Trademark Office, 2013-04-16)
A system for generating a representation of a situation is disclosed. The system comprises one or more computer-readable media including computer-executable instructions that are executable by one or more processors to ...
Reactive ion etching of lead zirconate titanate and ruthenium oxide thin films using CHClFCF.sub.3 or CHCl.sub.2 CF.sub.3 as an etch gas
(United States Patent and Trademark Office, 1995-01-17)
A method of reactive ion etching both a lead zirconate titanate ferroelectric dielectric and a RuO.sub.2 electrode, and a semiconductor device produced in accordance with such process. The dielectric and electrode are ...