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Kenneth Trueba Phones & Addresses

  • 1820 Juniper Pl, Corvallis, OR 97330 (541) 754-1115
  • 5755 Fair Oaks Dr, Corvallis, OR 97330
  • Waikoloa, HI
  • 336 Mount Union Ave, Philomath, OR 97370
  • Bellefontaine, MS
  • Orange Pk, FL

Resumes

Resumes

Kenneth Trueba Photo 1

President Of The Board At Corvallis Uzhhorod Sister Cities Association Member Of The Board Of Directors At Beyond War Senior Engineer At Imtech Inc See Less...

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Location:
Corvallis, Oregon Area
Industry:
Electrical/Electronic Manufacturing
Experience:
Corvallis Uzhhorod Sister Cities Association (Privately Held; Printing industry): President of the Board,  (June 2010-Present) Corvallis Uzhhorod Sister Cities Association facilitates programs between Corvallis and Uzhhorod to foster understanding and good relations between our c...
Kenneth Trueba Photo 2

Kenneth Trueba

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Publications

Us Patents

Ink Feed Trench Etch Technique For A Fully Integrated Thermal Inkjet Printhead

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US Patent:
6517735, Feb 11, 2003
Filed:
Mar 15, 2001
Appl. No.:
09/811052
Inventors:
Kenneth E. Trueba - Philomath OR
Charles C. Haluzak - Corvallis OR
David R. Thomas - Corvallis OR
Colby Van Vooren - Corvallis OR
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
H01L 2100
US Classification:
216 27, 216 2, 216 56, 216 99, 438753, 438756
Abstract:
A monolithic inkjet printhead formed using integrated circuit techniques is described. A silicon substrate has formed on its top surface a thin polysilicon layer in the area in which a trench is to be later formed in the substrate. The edges of the polysilicon layer align with the intended placement of ink feed holes leading into ink ejection chambers. Thin film layers, including a resistive layer, are formed on the top surface of the silicon substrate and over the polysilicon layer. An orifice layer is formed on the top surface of the thin film layers to define the nozzles and ink ejection chambers. A trench mask is formed on the bottom surface of the substrate. A trench is etched (using, for example, TMAH) through the exposed bottom surface of the substrate and to the polysilicon layer. The etching of the polysilicon layer exposes fast etch planes of the silicon. The TMAH then rapidly etches the silicon substrate along the etch planes, thus aligning the edges of the trench with the polysilicon.

Method For Servicing An Inkjet Printhead

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US Patent:
6557971, May 6, 2003
Filed:
Aug 22, 2000
Appl. No.:
09/644394
Inventors:
Ramon Vega - Sabadell, ES
Xavier Girones - Mora la Nova, ES
Xavier Bruch - Sant Cugat del Valles, ES
Antoni Murcia - San Diego CA
Kenneth E Trueba - Philomath OR
Assignee:
Hewlett-Packard Company - Palo Alto CA
International Classification:
B41J 2165
US Classification:
347 35
Abstract:
A method for servicing an inkjet printhead effects recovery against a particular printhead failure mode via implementation of a printhead servicing routine including, but not limited to, a bubble recovery routine, a contaminant purging routine, and/or a (standard) printhead servicing routine. In a preferred embodiment, the method for servicing an inkjet printhead takes into consideration nozzle health data, diagnostics, or the like. In a preferred embodiment, a bitmap or mask is employed to control firing of the nozzles during the servicing of the printhead. In a preferred embodiment, the servicing method includes the step of: firing the printing nozzles in a manner tending to force contaminants at the printing nozzles toward one end of the printhead. In another preferred embodiment, the servicing method includes the steps of: providing an inkjet printhead with larger-sized sewage nozzles at its edges; firing the printhead nozzles in a manner which forces contaminants to the edges; and firing the sewage nozzles to expel the contaminants.

Applicator For Dispensing Bioactive Compositions And Methods For Using The Same

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US Patent:
6684880, Feb 3, 2004
Filed:
Dec 4, 2001
Appl. No.:
10/007133
Inventors:
Kenneth E. Trueba - Philomath OR
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
A61M 1100
US Classification:
12820016, 12820019, 12820315, 12820312
Abstract:
An applicator for delivering a bioactive composition includes a jet dispenser having an orifice for ejection of droplets from the dispenser. The jet dispenser further includes a main body. At least partially insertable through the main body is a replaceable fluid reservoir for holding and delivering the bioactive composition to the orifice for ejection therethrough. A body orifice spacer is positioned between the orifice of the dispenser and a target during ejection of the bioactive composition to the target.

Thermal Drop Generator For Ultra-Small Droplets

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US Patent:
6698868, Mar 2, 2004
Filed:
Oct 31, 2001
Appl. No.:
10/000425
Inventors:
Kenneth E. Trueba - Philomath OR
Charles C. Haluzak - Corvallis OR
Terry E. McMahon - Albany OR
Donald W. Schulte - Corvallis OR
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
B41J 205
US Classification:
347 63, 347 65
Abstract:
A thermal-type drop generator for ejecting droplets of liquid having ultra-small volumes. In one embodiment the drop generator includes a chamber defined in part by an orifice member. The chamber is supported by a rigid substrate. Removable material is used in fabricating the chamber.

Fluid Ejector Head Having A Planar Passivation Layer

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US Patent:
6767474, Jul 27, 2004
Filed:
Jul 19, 2002
Appl. No.:
10/198904
Inventors:
Kenneth E Trueba - Philomath OR
Ronnie J. Yenchik - Blodgett OR
Ronald A. Hellekson - Eugene OR
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
B41J 204
US Classification:
216 27, 347 63, 347 64
Abstract:
A fluid ejector head, includes a fluid definition layer defining a chamber, the fluid definition layer having a substantially planar passivation surface. In addition, the fluid ejector head includes a sacrificial material filling the chamber that is planarized to the plane formed by the passivation surface. Further, the fluid ejector head includes a passivation layer, having substantially planar opposed major surfaces, formed on the planar passivation surface; and a resistive layer having substantially planar opposed major surfaces in contact with the passivation layer.

Fluid Ejector Head Having A Planar Passivation Layer

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US Patent:
6834942, Dec 28, 2004
Filed:
May 24, 2004
Appl. No.:
10/852894
Inventors:
Kenneth E Trueba - Philomath OR
Ronnie J. Yenchik - Blodgett OR
Ronald A. Hellekson - Eugene OR
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
B41J 205
US Classification:
347 63
Abstract:
A fluid ejector head, includes a fluid definition layer defining a chamber, the fluid definition layer having a substantially planar passivation surface. In addition, the fluid ejector head includes a sacrificial material filling the chamber that is planarized to the plane formed by the passivation surface. Further, the fluid ejector head includes a passivation layer, having substantially planar opposed major surfaces, formed on the planar passivation surface; and a resistive layer having substantially planar opposed major surfaces in contact with the passivation layer.

Drop Generator For Ultra-Small Droplets

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US Patent:
7125731, Oct 24, 2006
Filed:
Apr 11, 2003
Appl. No.:
10/412544
Inventors:
Charles C Haluzak - Corvallis OR, US
Kenneth E. Trueba - Philomath OR, US
Terry E McMahon - Albany OR, US
Donald W Schulte - Corvallis OR, US
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
H01L 21/66
US Classification:
438 21
Abstract:
A drop generator includes a substrate, and a mandrel that is disposed on the substrate for shaping the drop generator chamber. The mandrel is covered by the orifice member and thereafter removed.

Applicator For Dispensing Bioactive Compositions And Methods For Using The Same

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US Patent:
7198044, Apr 3, 2007
Filed:
Oct 29, 2003
Appl. No.:
10/697615
Inventors:
Kenneth E. Trueba - Philomath OR, US
Assignee:
Hewlett-Packard Development Company, L.P. - Houston TX
International Classification:
A61M 11/00
A61M 17/06
US Classification:
12820016, 12820019, 12820312, 12820315
Abstract:
Bioactive agents are topically administered or delivered to a mucous membrane by a jet dispenser using inkjet technology, such as that used in printing. The dispenser propels precise volumes of droplets or powder for administration to a subject, such as being inhaled through the mouth or nose. A controller in the dispenser may control delivery of multiple different drugs, timing of drug administration, or change drug regimens in response to a changing medical condition of a patient, such as those monitored by a sensor in communication with the controller, for example to prevent an overdose. Administration methods are also provided, along with replacement kits.
Kenneth Eugene Trueba from Corvallis, OR, age ~78 Get Report