Browsing Virginia Tech Patents by Title
Now showing items 1-20 of 689
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2-aroyl-4-acyl paclitaxel (Taxol) analogs
(United States Patent and Trademark Office, 2002-11-05)2-debenzoyl-4-deacetyl paclitaxel, antineoplastic analogs thereof and intermediates are taught, as well as the formation of the compound, analogs and intermediates. The compound, analogs and intermediates may be used to ... -
2-debenzoyl-2-acyl taxol derivatives and method for making same
(United States Patent and Trademark Office, 1999-12-14)The present invention relates to 2-debenzoyl-2-acyl taxol derivatives, analogues thereof and methods for making same. Compounds of the present invention include compounds having the general formula: ##STR1## wherein R.sub.1 ... -
2-Debenzoyl-2-acyl taxol derivatives and methods for making same
(United States Patent and Trademark Office, 1997-12-30)Compounds having the general formula: ##STR1## wherein R.sub.1 is an alkyl or substituted alkyl; R.sub.2 is selected from the group consisting of H and C(O)R.sub.a ; R.sub.3 is selected from the group consisting of H, ... -
2T-1C ferroelectric random access memory and operation method thereof
(United States Patent and Trademark Office, 2002-06-11)A 2T-1C FRAM, each cell of which includes two transistors and one ferroelectric capacitor so that the “charging” and “discharging” of the ferroelectric capacitor used in conjunction with the p-n junction of the two transistors ... -
3D printing part removal and interface for a 3D printing vending machine
(United States Patent and Trademark Office, 2018-04-03)The present invention concerns a system and method for fabricating a three-dimensional object. A build platform is provided that defines a build area and includes a print bed within the build area. Also provided is an ... -
3D printing vending machine
(United States Patent and Trademark Office, 2016-08-16)A vending machine for creating a three-dimensional object having an enclosure having an exterior and interior. The interior receives and houses at least one three-dimensional printer. An interface for accepting an instruction ... -
7-deoxy-6-substituted paclitaxels
(United States Patent and Trademark Office, 1998-06-30)The present invention concerns novel paclitaxel derivatives, their use as antitumor agents, and pharmaceutical formulations. -
Accelerated commutation for passive clamp isolated boost converters
(United States Patent and Trademark Office, 2005-04-05)An efficient and cost effective bidirectional DC/DC converter reduces switch voltage stress via accelerated commutation allowing use of a low-cost passive clamp circuit in boost mode. The converter includes a primary ... -
Accessible kiosk
(United States Patent and Trademark Office, 1999-06-01) -
Accurate magnetic field sensor and method for wireless phasor measurement unit
(United States Patent and Trademark Office, 2013-05-07)A phasor measurement unit and method including a transducer for transduction measurement of an electrical characteristic of a current carrying element in electrical power generation or distribution systems, the transducer ... -
Acousto-fluidic driver for active control of turbofan engine noise
(United States Patent and Trademark Office, 1997-09-02)Reduction or cancellation of acoustic noise is achieved by providing an amplified, oppositely phased version of the noise by means of an acousto-fluidic amplifier. The amplified acoustic output noise is delivered through ... -
Active control of aircraft engine inlet noise using compact sound sources and distributed error sensors
(United States Patent and Trademark Office, 1994-10-11)An active noise control system using a compact sound source is effective to reduce aircraft engine duct noise. The fan noise from a turbofan engine is controlled using an adaptive filtered-x LMS algorithm. Single multi ... -
Active control of aircraft engine inlet noise using compact sound sources and distributed error sensors
(United States Patent and Trademark Office, 1996-05-07)An active noise control system using a compact sound source is effective to reduce aircraft engine duct noise. The fan noise from a turbofan engine is controlled using an adaptive filtered-x LMS algorithm. Single multi ... -
Active dual reaction mass absorber for vibration control
(United States Patent and Trademark Office, 1999-03-23)An active vibration absorber including a frame connected to a structure to be controlled and at least two reaction mass elements operatively connected to the frame. Each of the reaction mass elements is independently movable ... -
Active/passive distributed absorber for vibration and sound radiation control
(United States Patent and Trademark Office, 2012-05-08)Vibration or acoustic sound control is achieved using an elastic layer of thermal or insulation material in which a plurality of discrete masses are distributed throughout. The elastic layer may be installed as a pre-formed ... -
Active/passive distributed absorber for vibration and sound radiation control
(United States Patent and Trademark Office, 2010-05-11)Vibration or acoustic sound control is achieved using an elastic layer of thermal or insulation material in which a plurality of discrete masses are distributed throughout. The elastic layer may be installed as a pre-formed ... -
Active/passive distributed absorber for vibration and sound radiation control
(United States Patent and Trademark Office, 2004-03-02)The active/passive absorber for extended vibration and sound radiation control includes principally two layers. The first layer has a low stiffness per unit area which allows motion in the direction perpendicular to its ... -
Active/passive distributed absorber for vibration and sound radiation control
(United States Patent and Trademark Office, 2009-08-11)The active/passive absorber for extended vibration and sound radiation control includes principally two layers. The first layer has a low stiffness per unit area which allows motion in the direction perpendicular to its ... -
Active/passive distributed absorber for vibration and sound radiation control
(United States Patent and Trademark Office, 2005-10-25)The active/passive absorber for extended vibration and sound radiation control includes principally two layers. The first layer has a low stiffness per unit area which allows motion in the direction perpendicular to its ... -
Adaptive bus voltage positioning for two-stage voltage regulators
(United States Patent and Trademark Office, 2007-01-09)Alteration of voltage input to a voltage regulator output stage from a Vbus regulator stage in a two-stage voltage regulator provides optimal Vbus voltage placement for a wide range of current loads ...