Patents by Inventor David A. Engler
David A. Engler 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).
-
Patent number: 7271534Abstract: The invention relates to organic electronic devices and methods of manufacture comprising at least two segments, each segment comprising an organic electronic light-emitting device wherein each segment is defined by peripheral edges; wherein each segment comprises a first electrical contact disposed on a first peripheral edge and a second electrical contact disposed on a different peripheral edge than the first electrical contact and the electrical contacts of each segment are joined in electrical communication with a conductive material.Type: GrantFiled: November 4, 2003Date of Patent: September 18, 2007Assignee: 3M Innovative Properties CompanyInventors: Raghunath Padiyath, Jon E. Ottman, David A. Engler
-
Publication number: 20070156382Abstract: Methods and systems for designing an experiment using a computer to determine whether the experiment is a true experiment are described. These approaches allow a user who is unsophisticated in the complexities of true experimental design to design and deploy an experiment that produces substantially confound-free results and can be used to determine and quantify any causal relationship between independent and dependent variables. The computer may select one or more independent and/or dependent variables of the experiment or may assist the user in selection of independent and/or dependent variables. Formation of control and treatment groups, randomization and/or blocking to reduce the effects of confounding variables may be performed by the computer with or without input from the user.Type: ApplicationFiled: December 29, 2005Publication date: July 5, 2007Inventors: James Graham, Craig Carlson, Brian Brooks, David Engler
-
Publication number: 20060198015Abstract: A microstructure to interact with electromagnetic waves by changing optical aspect in selected areas in response to an external signal, the microstructure comprising: a plurality of responsive elements, each responsive element capable of presenting at least two different optical aspects and changing between the optical aspects based on an applied external signal, a support substrate containing the responsive elements; and a plurality of assisting optical lenses each optically enlarging an image from the responsive elements associated with the assisting optical lens.Type: ApplicationFiled: May 17, 2006Publication date: September 7, 2006Inventors: David Engler, Rolf Biernath, John Nelson
-
Patent number: 7057599Abstract: A microstructure to interact with electromagnetic waves by changing optical aspect in selected areas in response to an external signal, the microstructure comprising: a plurality of responsive elements, each responsive element capable of presenting at least two different optical aspects and changing between the optical aspects based on an applied external signal; a support substrate containing the responsive elements; and a plurality of assisting optical lenses each optically enlarging an image from the responsive elements associated with the assisting optical lens.Type: GrantFiled: March 14, 2001Date of Patent: June 6, 2006Assignee: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath, John C. Nelson
-
Publication number: 20050235176Abstract: A system and method for voltage and frequency margining of a digital system such as a digital processing system. Various implementations of the present invention may be utilized to programmatically vary the voltage and or frequency utilized by one or more components within a processing system to effect changes in system and or component margining.Type: ApplicationFiled: February 25, 2005Publication date: October 20, 2005Inventors: Vincent Nguyen, David Engler
-
Publication number: 20050094394Abstract: The invention relates to organic electronic devices and methods of manufacture.Type: ApplicationFiled: November 4, 2003Publication date: May 5, 2005Inventors: Raghunath Padiyath, Jon Ottman, David Engler
-
Publication number: 20050095736Abstract: The invention relates to a method of making an organic electronic device and articles.Type: ApplicationFiled: November 4, 2003Publication date: May 5, 2005Inventors: Raghunath Padiyath, Jon Ottman, David Engler
-
Patent number: 6700695Abstract: The display panel comprises surrounding media containing particles which are responsive to changes in a magnetic field are optically anisotropic toward the viewing surface. The electrode film has an array layer and an electrode layer, where the array layer provides a support structure for the electrode layer and electrically non conductive and in contact with the surface of the display panel and having. a plurality of mesa shaped segments where each mesa shaped segment has a top face and side walls extending downward from the top face. The electrode layer formed of an electrically conductive material coats the array layer and is exposed for contact by an electrical stimulus. The electrode layer is thicker on the top face than on the side walls, producing resistive bridges between adjacent top faces. The resistive bridges partially electrically isolate each electrode from the other electrodes in the electrode layer.Type: GrantFiled: March 14, 2001Date of Patent: March 2, 2004Assignee: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath
-
Patent number: 6577432Abstract: A microfabricated structure to interact with electromagnetic waves, such as a visual display apparatus for positioning movable particles, the structure comprising a substrate containing a plurality of pockets and/or a plurality of posts, and a plurality of optically anisotropic particles placed in the substrate. Pockets are sealable in relation to other pockets and to air, and each pocket being capable of positioning at least one particle.Type: GrantFiled: March 14, 2001Date of Patent: June 10, 2003Assignee: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath
-
Patent number: 6570700Abstract: A microstructure to interact with electromagnetic waves by changing optical aspect in selected areas in response to an external signal, the microstructure comprising: a plurality of responsive elements, each responsive element capable of presenting at least two different optical aspects and changing between the optical aspects based on an applied external signal; and a support substrate containing the responsive elements, wherein at least a part of the support substrate defines an optical structure containing a plurality of assisting optical elements each optically enlarging an image from the responsive elements associated with the assisting optical element.Type: GrantFiled: March 14, 2001Date of Patent: May 27, 2003Assignee: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath, John C. Nelson
-
Patent number: 6521145Abstract: Generally, the present invention relates to a display film and a method of making same, where the display uses electrically responsive, reflective particles disposed within a polymer matrix. The invention includes a method of making a display film having one or more monolayers of the reflective particles. The invention is also directed to a display having particles selected from a production distribution of particles.Type: GrantFiled: October 2, 2000Date of Patent: February 18, 2003Assignee: 3M Innovative Properties CompanyInventors: David A. Engler, Brit G. Billingsley, William D. Miller, Richard John Pokorny
-
Patent number: 6480322Abstract: A method improves the respondability of moveable structures in a display medium, such as a gyricon display. The inventive method includes heating the display and exercising the rotatable structures within the display by an application of an electrical field. Applying heat to the display enlarges the cavity surrounding each particle due to thermal expansion of the cavity and the bead rotation cycling jostles the particles loose. The inventive method enables a larger percentage of the particles to rotate to a greater degree thereby improving resolution of an image. Alternatively, heating and exercising can be accomplished by application of ultrasonics. In addition, degassing the fluid contained in the display enhances switching with heat and improves the rotatability of the structures.Type: GrantFiled: March 14, 2001Date of Patent: November 12, 2002Assignee: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath
-
Publication number: 20020131150Abstract: A microfabricated structure to interact with electromagnetic waves, such as a visual display apparatus for positioning movable particles, the structure comprising a substrate containing a plurality of pockets and/or a plurality of posts, and a plurality of optically anisotropic particles placed in the substrate. Pockets are sealable in relation to other pockets and to air, and each pocket being capable of positioning at least one particle.Type: ApplicationFiled: March 14, 2001Publication date: September 19, 2002Applicant: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath
-
Publication number: 20020131151Abstract: A segmented electrode film is used with a display panel, such as “gyricon” (or twisting particle) displays or other forms of electronic paper, such as particulate electrophoretic displays, which are available from E-Ink Corporation. The display panel has a viewing surface and a backside surface opposing the viewing surface. The electrode film can be on the viewing surface, in which case the electrode film must be transparent, or the backside surface or in a printer. The display panel comprises surrounding media containing particles which are responsive to changes in a magnetic field are optically anisotropic toward the viewing surface. The electrode film has an array layer and an electrode layer, where the array layer provides a support structure for the electrode layer. The array layer is electrically non conductive and in contact with the surface of the display panel.Type: ApplicationFiled: March 14, 2001Publication date: September 19, 2002Applicant: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath
-
Publication number: 20020130831Abstract: A microstructure to interact with electromagnetic waves by changing optical aspect in selected areas in response to an external signal, the microstructure comprising: a plurality of responsive elements, each responsive element capable of presenting at least two different optical aspects and changing between the optical aspects based on an applied external signal; a support substrate containing the responsive elements; and a plurality of assisting optical lenses each optically enlarging an image from the responsive elements associated with the assisting optical lens.Type: ApplicationFiled: March 14, 2001Publication date: September 19, 2002Applicant: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath, John C. Nelson
-
Publication number: 20020131148Abstract: A microstructure to interact with electromagnetic waves by changing optical aspect in selected areas in response to an external signal, the microstructure comprising: a plurality of responsive elements, each responsive element capable of presenting at least two different optical aspects and changing between the optical aspects based on an applied external signal; and a support substrate containing the responsive elements, wherein at least a part of the support substrate defines an optical structure containing a plurality of assisting optical elements each optically enlarging an image from the responsive elements associated with the assisting optical element.Type: ApplicationFiled: March 14, 2001Publication date: September 19, 2002Applicant: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath, John C. Nelson
-
Publication number: 20020131149Abstract: A method improves the respondability of moveable structures in a display medium, such as a gyricon display. The inventive method includes heating the display and exercising the rotatable structures within the display by an application of an electrical field. Applying heat to the display enlarges the cavity surrounding each particle due to thermal expansion of the cavity and the bead rotation cycling jostles the particles loose. The inventive method enables a larger percentage of the particles to rotate to a greater degree thereby improving resolution of an image. Alternatively, heating and exercising can be accomplished by application of ultrasonics. In addition, degassing the fluid contained in the display enhances switching with heat and improves the rotatability of the structures.Type: ApplicationFiled: March 14, 2001Publication date: September 19, 2002Applicant: 3M Innovative Properties CompanyInventors: David A. Engler, Rolf W. Biernath
-
Patent number: 6383619Abstract: Generally, the present invention relates to a display film and a method of making same, where the display uses electrically responsive, reflective particles disposed within a polymer matrix. The invention includes a method of making a display film having one or more monolayers of the reflective particles. The invention is also directed to a display having particles selected from a production distribution of particles.Type: GrantFiled: January 29, 1999Date of Patent: May 7, 2002Assignee: 3M Innovative Properties CompanyInventors: David A. Engler, Brit G. Billingsley, William D. Miller, Richard John Pokorny
-
Patent number: 5110655Abstract: A retroreflective marking material which can be secured to a substrate, e.g., a firefighter's helmet, and then readily removed when desired, even after exposure to heat and flame. The material comprises a retroreflective layer made up of a layer of retroreflective elements in a binder layer, a fire resistant fabric, and a defined fire resistant adhesive on the rear of the fire resistant fabric. The adhesive adheres strongly to polycarbonate and can be stripped from polycarbonate after being held in a forced air oven at 260.degree. C. for 5 minutes. The marking material can contain fluorescent coloring agent(s) to afford good daylight visibility.Type: GrantFiled: October 17, 1990Date of Patent: May 5, 1992Assignee: Minnesota Mining and Manufacturing CompanyInventors: David A. Engler, Britton G. Billingsley
-
Patent number: 4695608Abstract: A bulk polymerization process for free radical polymerization of vinyl monomers and alkenyl azlactones or macromolecular monomers (e.g. functionalized polystyrene), in a wiped surface reactor is disclosed. Referring to FIG. 1; monomer streams 5 (after purification and silica gel column 2), and 7 and macromer or azlactone 8 are combined with free radical initiator 9 to form a premix 16. Pump 18 transfers the premix stream 22 through static mixer 24 into a wiped surface reactor 27. The reactor can be a counter rotating twin screw extruder which produces polymer stream 36 without the need of solvent and using residence times much shorter than prior art solution or emulsion processes.Some unique pressure sensitive adhesive acrylate polymers have been produced. They are believed to have a relatively high degree of branching. The bulk polymerization process permits the manufacture of pressure sensitive adhesive articles by extruding directly from the twin screw extruder onto a substrate.Type: GrantFiled: May 27, 1986Date of Patent: September 22, 1987Assignee: Minnesota Mining and Manufacturing CompanyInventors: David A. Engler, Anthony R. Maistrovich