Patents by Inventor Bulent Bulat
Bulent Bulat 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).
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Patent number: 7850461Abstract: Disclosed is a mechanical device that can be used to help maintain a connection between an electrical tail and an electronic device such as a touch sensor screen. The mechanical device deflects upon installation over the tail and the electronic device so that pressure caused by spring action helps maintain the connection. The mechanical device also includes a cutout region designed so that the tail can freely pass through the mechanical device.Type: GrantFiled: February 7, 2008Date of Patent: December 14, 2010Assignee: 3M Innovative Properties CompanyInventors: Kenneth J. Keefer, Anthony F. Chernefsky, Bülent Bulat
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Patent number: 7567240Abstract: The present invention provides systems and methods for detecting stray capacitance in capacitive touch sensors. The existence of stray capacitance can lead to errors in touch detection and touch position determination. Such errors can be avoided or corrected when the stray capacitance is detected. Detecting stray capacitance includes analyzing signals for features characteristic of stray capacitance noise events. Such features can include spatial features such as the location of a test touch position determined from signals caused by stray capacitance, as well as temporal features such as the rate of change of the detected signals.Type: GrantFiled: May 31, 2005Date of Patent: July 28, 2009Assignee: 3M Innovative Properties CompanyInventors: Richard A. Peterson, Jr., Bulent Bulat, Bruce A. Lessard, Gordon F. Taylor
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Patent number: 7439963Abstract: A field linearization pattern and a touch sensor incorporating same are disclosed. The touch sensor includes a polygonal field linearization pattern disposed around a touch sensitive area. The field linearization pattern includes a first side and a second side that intersect at a first corner. The field linearization pattern further includes an inner row and an outer row of discrete conductive segments. The inner row includes a conductive corner segment at the first corner. The conductive corner segment extends along a portion of the first and second sides of the linearization pattern. The touch sensor further includes electronics configured to detect a location of an input touch applied to the touch sensitive area by generating an electrical current in the linearization pattern. A current flowing from the first side to the second side of the linearization pattern is substantially confined within the linearization pattern.Type: GrantFiled: October 29, 2007Date of Patent: October 21, 2008Assignee: 3M Innovative Properties CompanyInventors: Bernard O. Geaghan, Bulent Bulat, Kenneth J. Keefer
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Publication number: 20080189919Abstract: Disclosed is a mechanical device that can be used to help maintain a connection between an electrical tail and an electronic device such as a touch sensor screen. The mechanical device deflects upon installation over the tail and the electronic device so that pressure caused by spring action helps maintain the connection. The mechanical device also includes a cutout region designed so that the tail can freely pass through the mechanical device.Type: ApplicationFiled: February 7, 2008Publication date: August 14, 2008Inventors: Kenneth J. Keefer, Anthony F. Chernefsky, Bulent Bulat
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Publication number: 20080041641Abstract: A field linearization pattern and a touch sensor incorporating same are disclosed. The touch sensor includes a polygonal field linearization pattern disposed around a touch sensitive area. The field linearization pattern includes a first side and a second side that intersect at a first corner. The field linearization pattern further includes an inner row and an outer row of discrete conductive segments. The inner row includes a conductive corner segment at the first corner. The conductive corner segment extends along a portion of the first and second sides of the linearization pattern. The touch sensor further includes electronics configured to detect a location of an input touch applied to the touch sensitive area by generating an electrical current in the linearization pattern. A current flowing from the first side to the second side of the linearization pattern is substantially confined within the linearization pattern.Type: ApplicationFiled: October 29, 2007Publication date: February 21, 2008Inventors: Bernard Geaghan, Bulent Bulat, Kenneth Keefer
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Patent number: 7327352Abstract: Electrode pattern disposed on a conductive surface is disclosed. The electrode pattern includes a plurality of conductive segments. The conductive segments are located along the edges of two or more concentric parallel polygons. Each edge of each polygon has one or more middle segments disposed between two end segments. For each edge of each polygon the middle segments are equal in length, and the segments are equally spaced. A touch sensor is disclosed that includes such an electrode pattern.Type: GrantFiled: June 14, 2002Date of Patent: February 5, 2008Assignee: 3M Innovative Properties CompanyInventors: Kenneth J. Keefer, Bülent Bulat, Bernard O. Geaghan
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Patent number: 7307624Abstract: A field linearization pattern and a touch sensor incorporating same are disclosed. The touch sensor includes a polygonal field linearization pattern disposed around a touch sensitive area. The field linearization pattern includes a first side and a second side that intersect at a first corner. The field linearization pattern further includes an inner row and an outer row of discrete conductive segments. The inner row includes a conductive corner segment at the first corner. The conductive corner segment extends along a portion of the first and second sides of the linearization pattern. The touch sensor further includes electronics configured to detect a location of an input touch applied to the touch sensitive area by generating an electrical current in the linearization pattern. A current flowing from the first side to the second side of the linearization pattern is substantially confined within the linearization pattern.Type: GrantFiled: December 30, 2003Date of Patent: December 11, 2007Assignee: 3M Innovative Properties CompanyInventors: Bernard O. Geaghan, Bülent Bulat, Kenneth J. Keefer
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Patent number: 7227538Abstract: A pattern for linearizing an electric field and a touch sensor incorporating same are disclosed. The touch sensor includes an electrically resistive film that covers a touch sensitive area. The touch sensor further includes two or more substantially parallel polygonal rows of electrically conductive segments disposed on the resistive film and surrounding the touch sensitive area. Each edge of each row has one or more middle electrically conductive segments disposed between two end electrically conductive segments. Gaps separate adjacent conductive segments in a row. A middle conductive segment in a row fully overlaps a middle conductive segment in an adjacent row. The overlap defines a full overlap region. The touch sensor further includes a discrete electrically insulative segment disposed in the resistive film in the full overlap region. The insulative segment increases the electrical resistance between the two middle conductive segments.Type: GrantFiled: February 25, 2004Date of Patent: June 5, 2007Assignee: 3M Innovative Properties CompanyInventors: Bemard O. Geaghan, Kenneth J. Keefer, Bülent Bulat
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Publication number: 20060267953Abstract: The present invention provides systems and methods for detecting stray capacitance in capacitive touch sensors. The existence of stray capacitance can lead to errors in touch detection and touch position determination. Such errors can be avoided or corrected when the stray capacitance is detected. Detecting stray capacitance includes analyzing signals for features characteristic of stray capacitance noise events. Such features can include spatial features such as the location of a test touch position determined from signals caused by stray capacitance, as well as temporal features such as the rate of change of the detected signals.Type: ApplicationFiled: May 31, 2005Publication date: November 30, 2006Inventors: Richard Peterson, Bulent Bulat, Bruce Lessard, Gordon Taylor
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Publication number: 20050184965Abstract: A pattern for linearizing an electric field and a touch sensor incorporating same are disclosed. The touch sensor includes an electrically resistive film that covers a touch sensitive area. The touch sensor further includes two or more substantially parallel polygonal rows of electrically conductive segments disposed on the resistive film and surrounding the touch sensitive area. Each edge of each row has one or more middle electrically conductive segments disposed between two end electrically conductive segments. Gaps separate adjacent conductive segments in a row. A middle conductive segment in a row fully overlaps a middle conductive segment in an adjacent row. The overlap defines a full overlap region. The touch sensor further includes a discrete electrically insulative segment disposed in the resistive film in the full overlap region. The insulative segment increases the electrical resistance between the two middle conductive segments.Type: ApplicationFiled: February 25, 2004Publication date: August 25, 2005Inventors: Bemard Geaghan, Kenneth Keefer, Bulent Bulat
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Publication number: 20050146509Abstract: A field linearization pattern and a touch sensor incorporating same are disclosed. The touch sensor includes a polygonal field linearization pattern disposed around a touch sensitive area. The field linearization pattern includes a first side and a second side that intersect at a first corner. The field linearization pattern further includes an inner row and an outer row of discrete conductive segments. The inner row includes a conductive corner segment at the first corner. The conductive corner segment extends along a portion of the first and second sides of the linearization pattern. The touch sensor further includes electronics configured to detect a location of an input touch applied to the touch sensitive area by generating an electrical current in the linearization pattern. A current flowing from the first side to the second side of the linearization pattern is substantially confined within the linearization pattern.Type: ApplicationFiled: December 30, 2003Publication date: July 7, 2005Inventors: Bernard Geaghan, Bulent Bulat, Kenneth Keefer
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Patent number: 6422096Abstract: A load cell comprises a member for receiving forces applied by the load, and a plurality of force sensing elements supported by the member and arranged with respect, to each other to independently sense differently directed components of the applied forces. The member is disposed, e.g., in a horizontal plane for receiving the load forces, and the force sensing elements are strain gages. One of the strain gages is arranged to sense a component of the forces applied in a vertical direction relative to the plane, and a second strain gage is arranged to sense a component of the forces applied in a horizontal direction relative to the plane. Among other advantages, the load cell is highly versatile can be used to measure loading forces applied in virtually any direction.Type: GrantFiled: August 6, 1998Date of Patent: July 23, 2002Assignee: BLH Electronics, Inc.Inventor: Bülent Bulat
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Patent number: 4538063Abstract: A photo transducer circuit (30) selectively controls the current which is transmitted between power terminals (32, 34). A light emitter (20) transmits light to a first photo receiver (24) and a second photo receiver (26). A vane (16) is movable by a Bourdon tube (12) to permit a variable amount of light to pass from the photo emitter (20) to the photo receiver (26). The output of the photo emitter (20) is regulated by a circuit which monitors the output of the photo receiver (24). Circuitry is provided to set a minimum current flow between the power terminals (32, 34) when the vane (16) substantially blocks illumination of the photo receiver (26). Further circuitry is provided to set a maximum current flow between the power terminals (32, 34) when the vane (16) allows substantial exposure of the photo receiver (26) to the light produced by emitter (20).Type: GrantFiled: January 5, 1983Date of Patent: August 27, 1985Assignee: Dresser Industries, Inc.Inventor: Bulent Bulat
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Patent number: 4223232Abstract: A single active element performs the multiple functions of regulating DC voltage level from an AC source supplied to charge a battery and of coupling the battery to power an emergency system such as an emergency lighting system upon loss of the AC source. Preferably, the single active element also performs a third function of disconnecting the battery from the emergency system in time to prevent over discharge and consequent permanent damage to the battery.Type: GrantFiled: May 31, 1978Date of Patent: September 16, 1980Assignee: Chloride IncorporatedInventor: Bulent Bulat