Patents by Inventor David Woodruff
David Woodruff has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20120191059Abstract: The present disclosure provides cassettes and methods of using same for the delivery of fluids to a patient using fluid delivery systems. In a general embodiment, the cassettes of the present disclosure include a flexible tube, a housing having a recessed area and first and second ends for holding the flexible tube, and at least two additional components including, for example, different sensors, false reading components for sensors, anti-flow valve means, insertion guides, directional indicators, latch mechanisms, kink-prevention notches, etc. Such additional components provide the cassettes of the present disclosure with several advantages including, for example, quality control, efficiency of use, cost effectiveness, and safety of use.Type: ApplicationFiled: July 8, 2010Publication date: July 26, 2012Applicant: NESTEC S.A.Inventors: David Charles Cummings, Alan P. Halbert, Seralaathan Hariharesan, James Allen Higgins, Brian Highley, Michael Rueben Jedwab, Russell Paul Meyer, Andrew Peter Nelson, David Woodruff West
-
Publication number: 20110319738Abstract: Implantable medical devices, systems, methods and kits for transcutaneous insertion of the implantable medical devices are provided.Type: ApplicationFiled: June 28, 2011Publication date: December 29, 2011Applicant: Abbott Diabetes Care Inc.Inventors: Richard David Woodruff, Mohammed Ebrahim Moein, Phillip Yee
-
Publication number: 20110208205Abstract: A thrombectomy catheter deployment system which greatly simplifies setup procedures and operation of a thrombectomy catheter includes a stand alone drive unit and a disposable pump/catheter assembly which is manually placed into a carriage assembly in the drive unit. The pump/catheter assembly has a plurality of preconnected components including tubular structure and a thrombectomy catheter connected thereto and is transported into or out of the interior of the drive unit for automatic high pressure pump piston head engagement or disengagement with a reciprocating linear actuator and for automatic engagement or disengagement of an effluent waste tube with a roller pump. A barcode reader senses specific operational data pertaining to an individual pump and provides an interface for operation of the reciprocating linear actuator. A bubble trap incorporated for effective debubbling of saline solution is closely coupled to an insert molded pump having an improved valve arrangement.Type: ApplicationFiled: May 2, 2011Publication date: August 25, 2011Inventors: Eric Joel Thor, Michael John Bonnette, Nicole Jaye Aasen, Martyn Stuart Abbott, Douglas James Ball, Walter Charles Croll, David Charles Cummings, Chad Nicholas Grant, Mark Alfred Hilse, James Fredrick Karpinski, Daniel Joseph Kneip, Jeffrey William Rogers, Ernest Ralph Sherger, III, John Lloyd Teschendorf, Stephen Earl Weisel, David Woodruff West
-
Patent number: 7935077Abstract: A thrombectomy catheter deployment system which greatly simplifies setup procedures and operation of a thrombectomy catheter includes a stand alone drive unit and a disposable pump/catheter assembly which is manually placed into a carriage assembly in the drive unit. The pump/catheter assembly has a plurality of preconnected components including tubular structure and a thrombectomy catheter connected thereto and is transported into or out of the interior of the drive unit for automatic high pressure pump piston head engagement or disengagement with a reciprocating linear actuator and for automatic engagement or disengagement of an effluent waste tube with a roller pump. A barcode reader senses specific operational data pertaining to an individual pump and provides an interface for operation of the reciprocating linear actuator. A bubble trap incorporated for effective debubbling of saline solution is closely coupled to an insert molded pump having an improved valve arrangement.Type: GrantFiled: September 28, 2005Date of Patent: May 3, 2011Assignee: Medrad, Inc.Inventors: Eric Joel Thor, Michael John Bonnette, Nicole Jaye Aasen, Martyn Stuart Abbott, Douglas James Ball, Walter Charles Croll, David Charles Cummings, Chad Nicholas Grant, Mark Alfred Hilse, James Fredrick Karpinski, Daniel Joseph Kneip, Jeffrey William Rogers, Ernest Ralph Scherger, III, John Lloyd Teschendorf, Stephen Earl Weisel, David Woodruff West
-
Patent number: 7909918Abstract: An intense field dielectric air filtration system includes a perimeter frame for wall or ceiling mounting at the inlet of a return air duct for an air conditioning apparatus. A door including a grille disposed thereon is mounted for movement on the frame between working and non-working positions for access to an air filter unit, a pre-filter unit and an intense field particle charging unit. Contacts on the filter unit and the field charging unit engage cooperating contacts on an enclosure mounted on the frame when the door is closed to supply electrical power. An interlock is provided to interrupt power when the door is moved to an open position or the grille is removed. A control system disposed in the enclosure includes user control features accessible when the door is in an open position. An alternate embodiment includes a support frame for positioning the filtration system in ductwork or the like other than a return air inlet.Type: GrantFiled: August 15, 2007Date of Patent: March 22, 2011Assignee: Trane International, Inc.Inventors: Larry S. Bias, Kristin Lyn Schaefer, Shannon L. Smith, John Mark Hagan, Mark David Woodruff, Daniel Joseph Mitchell, Cassius J. Mullen, Timothy H. Cauley, Robert Beasley
-
Publication number: 20110040625Abstract: The present invention is comprised of a computer system and software used to track and recall useful information related to a users presence relative to a geographical landmark. This invention may be used to recall personal contact information of individuals related to the geographical location. Additionally, the invention may be used to advertise features related to the location such as local stores, sales, specials or upcoming events.Type: ApplicationFiled: February 12, 2008Publication date: February 17, 2011Inventors: DAVID WOODRUFF, John A. Werner
-
Publication number: 20090163691Abstract: A method for the purification of aromatic polyether polymers prepared by a halide displacement polymerization process comprises adsorbing the catalyst with an alkali metal halide to form an adsorbent component and then removing the adsorbent component. Mixtures resulting from this method are also discussed.Type: ApplicationFiled: December 21, 2007Publication date: June 25, 2009Applicant: SABIC INNOVATIVE PLASTICS IP B.V.Inventors: Beatriz Penalver Bernabe, Thomas Guggenheim, David Bruce Hall, Norman Johnson, Juan Justino Rodriguez Ordonez, David Woodruff
-
Publication number: 20090044703Abstract: An intense field dielectric air filtration system includes a perimeter frame for wall or ceiling mounting at the inlet of a return air duct for an air conditioning apparatus. A door including a grille disposed thereon is mounted for movement on the frame between working and non-working positions for access to an air filter unit, a pre-filter unit and an intense field particle charging unit. Contacts on the filter unit and the field charging unit engage cooperating contacts on an enclosure mounted on the frame when the door is closed to supply electrical power. An interlock is provided to interrupt power when the door is moved to an open position or the grille is removed. A control system disposed in the enclosure includes user control features accessible when the door is in an open position. An alternate embodiment includes a support frame for positioning the filtration system in ductwork or the like other than a return air inlet.Type: ApplicationFiled: August 15, 2007Publication date: February 19, 2009Inventors: Larry S. Bias, Kristin Lyn Schaefer, Shannon L. Smith, John Mark Hagan, Mark David Woodruff, Daniel Joseph Mitchell, Cassius J. Mullen, Timothy H. Cauley, Robert Beasley
-
Publication number: 20070280793Abstract: A tool has a slot provided between a pair of extremities at its distal end. The extremities have cutting blades mounted thereon. The slot is configured to receive a plate. The tool has a conduit running along its axis for communication of pressurized fluid to the slot and plate. The plate directs flow of the pressurized fluid outward toward the extremities. The resulting outward force causes the extremities to bend outward, thereby urging the cutting blades outward for cutting, reaming, or other working of the workpiece. The resilience of the tool causes the extremities to return back inward when the fluid pressure is reduced. A plate may be configured to receive a wafer for transferring force from the pressurized fluid to the extremities. Some embodiments of the plate have an adjustment feature that is operable to selectively adjust the flow rate or pressure of fluid directed toward the extremities.Type: ApplicationFiled: August 20, 2007Publication date: December 6, 2007Inventors: Stan Weidmer, David Woodruff
-
Publication number: 20070180003Abstract: An (n,k,r,t)-exclusive set system over a set U includes elements Sƒ each of corresponds to a polynomial ƒ(u) in one or more coordinates of u?U. The polynomial is zero on U\Sƒ but is not zero on Sƒ. In some embodiments, an asymptotically low key complexity k is provided.Type: ApplicationFiled: October 30, 2006Publication date: August 2, 2007Inventors: Craig Gentry, Zulfikar Ramzan, David Woodruff
-
Publication number: 20070168659Abstract: In a broadcast encryption scheme, an optimal or near-optimal set covering CV(f,P) is computed for a set P of privileged users and at most a predefined number f of revoked users (“free riders”). The covering consists of elements of a predefined set cover CC(U) for the set of all users U. The covering is computed by finding optimal or near-optimal coverings for privileged users for CC(U) elements that are proper subsets of U. More particularly, possible assignments of free riders to the subsets are examined, and an assignment is selected to fit an optimality criterion for the total set covering. In some embodiments, only “meeting point” elements of CC(U) are fully examined. A meeting point is an element containing at least two “immediate child” elements each of which contains a revoked user. An immediate child of a “parent” element is a proper subset of the parent with no intermediate elements (no elements containing the child as a proper subset and itself being a proper subset of the parent).Type: ApplicationFiled: November 17, 2006Publication date: July 19, 2007Inventors: Craig Gentry, Zulfikar Ramzan, David Woodruff
-
Publication number: 20060293528Abstract: A method for purifying oxybisphthalic anhydrides is provided. A first mixture comprising at least one oxybisphthalic anhydride, at least one solvent, and at least one inorganic salt is diluted with a solvent such that the concentration of oxybisphthalic anhydride is less than 25 weight percent. This second mixture is then heated to dissolve the oxybisphthalic anhydride thereby providing a third mixture. The third mixture is then filtered at a temperature above the crystallization temperature of the oxybisphthalic anhydride. The oxybisphthalic anhydride present in the filtrate is then crystallized to provide a purified oxybisphthalic anhydride as a slurry. Also included within the scope of the present invention are a method for preparing oxybisphthalic anhydrides and a method for preparing polyetherimides comprising structural units derived from the oxybisphthalic anhydride purified by the method of the present invention.Type: ApplicationFiled: June 24, 2005Publication date: December 28, 2006Inventors: Albert Stella, Qing Ye, David Woodruff, Paul Howson
-
Publication number: 20060257219Abstract: A tool for working a workpiece has a slot provided between a pair of extremities at its distal end. The extremities have cutting blades mounted thereon. The slot is configured to receive a plate. The tool has a conduit running along its axis for communication of pressurized fluid to the slot and plate. The plate directs flow of the pressurized fluid outward toward the extremities. The resulting outward force causes the extremities to bend outward, thereby urging the cutting blades outward for cutting, reaming, or other working of the workpiece. The resilience of the tool causes the extremities to return back inward when the fluid pressure is reduced. A plate may be configured to receive a wafer for transferring force from the pressurized fluid to the extremities.Type: ApplicationFiled: July 27, 2006Publication date: November 16, 2006Applicant: MAKINO, INC.Inventors: David Woodruff, Stan Weidmer
-
Publication number: 20060224024Abstract: A method for preparing a metal salt of a hydroxy-substituted aromatic compound is described. The method comprises contacting in an aqueous medium at least one hydroxy-substituted aromatic compound with a base comprising a metal cation to provide a mixture comprising water and a metal salt of said hydroxy-substituted aromatic compound. The aqueous metal salt is then contacted with a substantially water-immiscible solvent at a temperature greater than the boiling point of water at the prevailing pressure to provide a slurry comprising the metal salt of the hydroxy-substituted aromatic compound and a vapor stream comprising the water-immiscible solvent and water. The components of the vapor stream are separated using a vapor handling system comprising a partial reflux condenser to provide a water-rich component and a water immiscible solvent-rich component.Type: ApplicationFiled: March 30, 2005Publication date: October 5, 2006Inventors: James Silva, Thomas Guggenheim, David Woodruff
-
Publication number: 20060173158Abstract: Polyether polymers, such as polyetherimides, are prepared by the reaction of a dihydroxy-substituted aromatic hydrocarbon alkali metal salt, such as bisphenol A disodium salt, with a bis(N-(chlorophthalimido))aromatic compound, such as 1,3- and/or 1,4-bis(N-(4-chlorophthalimido))benzene, in a solvent such as o-dichlorobenzene and in the presence of a phase transfer catalyst such as a hexaalkylguanidinium chloride. Several embodiments may be employed to improve the method. They comprise employing substantially dry reagents, employing a high solids level in solvent, beginning with an excess of bis(N-(chlorophthalimido))-aromatic compound and incrementally adding alkali metal salt, employing alkali metal salt of small particle size, and using reagents of high purity.Type: ApplicationFiled: February 28, 2006Publication date: August 3, 2006Applicant: General Electric CompanyInventors: Daniel Brunelle, Havva Acar, Farid Khouri, Thomas Guggenheim, David Woodruff, Norman Johnson
-
Publication number: 20060167210Abstract: A method of making a polyether polymer comprises reacting a salt of a dihydroxy-substituted aromatic hydrocarbon with a substituted aromatic compound of formula (I) Z(A1-X1)2 ??(I) in the presence of a catalyst to form an intermediate polymer having endgroups, wherein the molar ratio of the salt of a dihydroxy-substituted aromatic hydrocarbon to the substituted aromatic compound is less than 1, Z is an activating radical, A1 is an aromatic radical and X1 is fluoro, chloro, bromo or nitro; determining the additional amount of the salt of a dihydroxy-substituted aromatic hydrocarbon needed to form a final polyether polymer with a predetermined molecular weight and adding the additional amount of the salt of a dihydroxy-substituted aromatic hydrocarbon to the intermediate polymer.Type: ApplicationFiled: January 27, 2005Publication date: July 27, 2006Inventors: Thomas Guggenheim, Norman Johnson, Ganesh Kailasam, Pradeep Nadkarni, David Woodruff
-
Publication number: 20060159530Abstract: A tool for working a workpiece has a slot provided between a pair of extremities at its distal end. The extremities have cutting blades mounted thereon. The slot is configured to receive a plate. The tool has a conduit running along its axis for communication of pressurized fluid to the slot and plate. The plate directs flow of the pressurized fluid outward toward the extremities. The resulting outward force causes the extremities to bend outward, thereby urging the cutting blades outward for cutting, reaming, or other working of the workpiece. The resilience of the tool causes the extremities to return back inward when the fluid pressure is reduced. A plate may be configured to receive a wafer for transferring force from the pressurized fluid to the extremities.Type: ApplicationFiled: May 10, 2005Publication date: July 20, 2006Inventors: David Woodruff, Stan Weidmer
-
Publication number: 20060135741Abstract: Bis(halophthalimides) are prepared in mixture in an organic liquid such as ortho-dichlorobenzene or anisole, by a reaction at a temperatire of at least 150° C. between at least one diamine compound and at least one halophthalic anhydride in the presence of imidization catalyst. The reaction mixture is maintained at about 15% by weight solids content and rich in the halophthalic anhydride by constantly monitoring the reaction mixture using analytical methods such as high performance liquid chromatography. The product mixture may be directly employed in the direct preparation of polyetherimides, and similar slurries may be employed to prepare other polyether polymers.Type: ApplicationFiled: December 22, 2004Publication date: June 22, 2006Inventors: John Gui, Farid Khouri, Norman Johnson, Thomas Guggenheim, David Woodruff, James Silva
-
Publication number: 20060089487Abstract: A method of separating a polymer-solvent mixture is described wherein a polymer-solvent mixture is heated prior to its introduction into an extruder comprising an upstream vent and/or a side feeder vent to allow flash evaporation of the solvent, and downstream vents for removal of remaining solvent. The one-step method is highly efficient having very high throughput rates while at the same time providing a polymer product containing low levels of residual solvent.Type: ApplicationFiled: December 8, 2005Publication date: April 27, 2006Inventors: Norberto Silvi, Mark Giammattei, Jan Keulen, David Woodruff, Paul Wilson, Paul Buckley, Norman Johnson, Narayan Ramesh
-
Publication number: 20060085651Abstract: Records in a secure database include attributes. A query homomorphically encrypts indices identifying one record and attribute. A secret key is generated at a certain query count and is divided into randomly generated key shares. A key share sequence is homomorphically encrypted. A table is formed by encrypting the indices, secret key and attributes. The key shares are decrypted sufficient to recover the secret key subject to a non-inference enabling query. In a further embodiment, a query count is maintained. Records in a secure database include attributes, with an attributes set forming inference channels. A data structure includes ciphertext keys. A pseudorandom function seed and non-malleable encryption secret key are chosen. A query provides indices identifying one record and attribute. A secure function evaluation is executed. A table combines the attributes with the pseudorandom function applied to the seed and indices. A table entry for the indices is provided.Type: ApplicationFiled: October 19, 2004Publication date: April 20, 2006Inventors: Jessica Staddon, David Woodruff