Patents by Inventor Ilene J. Busch-Vishniac
Ilene J. Busch-Vishniac 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: 9484524Abstract: Piezoelectric compositions are provided wherein mechanical and piezoelectric properties can be separately modulated. Preferred compositions include resin blends that comprise: (a) a piezoelectrically active polymer and (b) a matrix polymer, methods of making, and use of such resin blends. Advantages of preferred resin blends of the invention can include high piezoelectricity, mechanical strength and flexibility, convenient fabrication process, and high sensitivity at high temperatures.Type: GrantFiled: January 2, 2014Date of Patent: November 1, 2016Assignee: The Johns Hopkins UniversityInventors: Michael Yu, James E. West, Ilene J. Busch-Vishniac, Dawnielle Farrar
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Publication number: 20140117272Abstract: Piezoelectric compositions are provided wherein mechanical and piezoelectric properties can be separately modulated. Preferred compositions include resin blends that comprise: (a) a piezoelectrically active polymer and (b) a matrix polymer, methods of making, and use of such resin blends. Advantages of preferred resin blends of the invention can include high piezoelectricity, mechanical strength and flexibility, convenient fabrication process, and high sensitivity at high temperatures.Type: ApplicationFiled: January 2, 2014Publication date: May 1, 2014Applicant: THE JOHNS HOPKINS UNIVERSITYInventors: Michael Yu, James E. West, Ilene J. Busch-Vishniac, Dawnielle Farrar
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Patent number: 8641919Abstract: Piezoelectric compositions are provided wherein mechanical and piezoelectric properties can be separately modulated. Preferred compositions include resin blends that comprise: (a) a piezoelectrically active polymer and (b) a matrix polymer, methods of making, and use of such resin blends. Advantages of preferred resin blends of the invention can include high piezoelectricity, mechanical strength and flexibility, convenient fabrication process, and high sensitivity at high temperatures.Type: GrantFiled: August 8, 2007Date of Patent: February 4, 2014Assignee: The Johns Hopkins UniversityInventors: Michael Yu, James E. West, Ilene J. Busch-Vishniac, Dawnielle Farrar
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Publication number: 20100230629Abstract: Piezoelectric compositions are provided wherein mechanical and piezoelectric properties can be separately modulated. Preferred compositions include resin blends that comprise: (a) a piezoelectrically active polymer and (b) a matrix polymer, methods of making, and use of such resin blends. Advantages of preferred resin blends of the invention can include high piezoelectricity, mechanical strength and flexibility, convenient fabrication process, and high sensitivity at high temperatures.Type: ApplicationFiled: August 8, 2007Publication date: September 16, 2010Applicant: THE JOHNS HOPKINS UNIVERSITYInventors: Michael Yu, James E. West, Ilene J. Busch-Vishniac, Dawnielle Farrar
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Patent number: 5367373Abstract: Optical and computational components are combined to form high precision, six degree-of-freedom, single-sided, noncontact position measurement systems. Reflective optical targets are provided on a target object whose position is to be sensed. Light beams are directed toward the optical targets, producing reflected beams. Electrical signals are produced by movements of reflected beams across position-sensitive detectors, such as lateral-effect photodiodes. The signals are transformed to provide measurements of translation along and rotation around three nonparallel axes which define the space in which the target object moves.Type: GrantFiled: November 19, 1992Date of Patent: November 22, 1994Assignee: Board of Regents, The University of Texas SystemInventors: Ilene J. Busch-Vishniac, Alvin B. Buckman, Wanjun Wang, Dahong Oian, Vladimir Mancevski
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Patent number: 4598590Abstract: A back electrode has a plurality of ridges on one surface. An electret foil is spaced from the ridged surface of the back electrode. In the absence of applied pressure, a gap remains between the foil and the surface of the back electrode between the ridges. Above one applied pressure, the foil collapses between the ridges. Below a second applied pressure, the foil returns to its original position.Type: GrantFiled: September 14, 1984Date of Patent: July 8, 1986Assignee: AT&T Bell LaboratoriesInventors: Ilene J. Busch-Vishniac, Robert A. Kubli, James E. West
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Patent number: 4558184Abstract: Disclosed is an electroacoustic transducer, such as a microphone, which may be integrated into a semiconductor chip and a method of fabrication. The semiconductor is etched to produce a membrane having a sufficiently small thickness and an area so as to vibrate at audio frequencies. Electrodes are provided in relation to the membrane so that an electrical output signal can be derived from the audio frequencies, or vice versa, due to variable capacitance. Preferably, the sensitivity of the device is made to be an approximately linear function of sound pressure level to be compatible with amplification.Type: GrantFiled: January 20, 1984Date of Patent: December 10, 1985Assignee: AT&T Bell LaboratoriesInventors: Ilene J. Busch-Vishniac, W. Stewart Lindenberger
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Patent number: 4434327Abstract: An electret transducer for producing a directional response, electret foil (92) and a backplate (94) with the actual air gap thickness therebetween varying in accordance with a predetermined relationship. The sensitivity of the electret transducer varies inversely as the actual air gap thickness. In one embodiment the actual air gap thickness is realized by a plurality of posts (90) having heights varying according to the aforesaid relationship. In another embodiment, the actual air gap thickness is realized by varying the thickness of the aforesaid backplate.Type: GrantFiled: November 20, 1981Date of Patent: February 28, 1984Assignee: Bell Telephone Laboratories, IncorporatedInventors: Ilene J. Busch-Vishniac, Robert L. Wallace, Jr., James E. West
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Patent number: 4429193Abstract: A directional electret transducer comprises an electret foil and a metalized backplate the effective air gap thickness therebetween varying according to a predetermined relationship. The sensitivity of the electret transducer is directly proportional to the effective air gap thickness. The effective air gap thickness is realized in three ways: first, a plurality of equal diameter holes are drilled to varying depths in the aforesaid backplate; second, a plurality of holes of varying diameters are drilled through the aforesaid backplate; third, a plurality of equal diameter holes are drilled through the aforesaid backplate, the density of the holes varying. In each of the aforesaid three ways, the variation is according to the predetermined relationship.Type: GrantFiled: November 20, 1981Date of Patent: January 31, 1984Assignee: Bell Telephone Laboratories, IncorporatedInventors: Ilene J. Busch-Vishniac, Robert L. Wallace, Jr., James E. West
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Patent number: 4429189Abstract: An electret transducer comprises an electrostatically charged electret foil (10) superimposed directly over a selectively metalized rough surface (16) of a backplate (18). Selective metalization is realized by depositing a thin metal layer (20), the contour of which is defined by a predetermined relationship, over the rough surface (16). The sensitivity of the electret transducer at any point thereon is directly proportional to the width of the metal layer on the backplate. The response characteristic of the electret transducer comprises a main lobe and a plurality of sidelobes below a preselected threshold.Type: GrantFiled: November 20, 1981Date of Patent: January 31, 1984Assignee: Bell Telephone Laboratories, IncorporatedInventors: David A. Berkley, Ilene J. Busch-Vishniac, Robert L. Wallace, Jr., James E. West
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Patent number: 4429191Abstract: An electret transducer for producting a highly directional response characteristic comprises a backplate (18) and, superimposed thereon, an electrostatically charged electret foil (10). The electrostatic charge varies according to a predetermined relationship. The sensitivity of the electret transducer, at any point thereon, is directly proportional to the electrostatic charge on the electret foil at that point.Type: GrantFiled: November 20, 1981Date of Patent: January 31, 1984Assignee: Bell Telephone Laboratories, IncorporatedInventors: Ilene J. Busch-Vishniac, Robert L. Wallace, Jr., James E. West
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Patent number: 4429192Abstract: An acoustic transducer for producing highly directional characteristics comprises a metalized backplate (130) facing the flat surface (134) of an electrostatically charged electret foil (132). The thickness of the electret foil varies along the length thereof according to a predetermined relationship. The sensitivity of the electret transducer varies directly with the thickness of the electret foil.Type: GrantFiled: November 20, 1981Date of Patent: January 31, 1984Assignee: Bell Telephone Laboratories, IncorporatedInventors: Ilene J. Busch-Vishniac, Robert L. Wallace, Jr., James E. West