SIMON S COHEN
Plumbers in Burlington, MA

5258643, Nov 2, 1993

Jul 25, 1991

7/735427

Simon S. Cohen - Burlington MA

Massachusetts Institute of Technology - Cambridge MA

H01L 2934, H01L 2946, H01L 2954, H01L 2348

257530

Methods and systems are disclosed for fabricating electrically programmable link structures by fabricating a first conductor, which comprises a refractory conductive material, then fabricating an insulative link material over the refractory conductive material and, subsequently, depositing an upper conductive material over the link material. In use, an electrical path can be formed between the first and second conductive elements by applying a voltage between such elements across at least one selected region of the insulator, such that the insulative link material is transformed in the region and rendered conductive to form an electrical signal path. The link material is preferably a silicon oxide insulator and The U. S. Government has rights in this invention pursuant to Contract No. F19628-90-C-0002 awarded by the Department of the Air Force.

5468680, Nov 21, 1995

Mar 18, 1994

8/210344

Simon S. Cohen - Burlington MA

Massachusetts Institute of Technology - Cambridge MA

H01L 2114, H01L 2144

437170

A device and a method for interrupting the continuity of a conductor and linking a pair of conductors are disclosed. The device is a three-terminal fuse having first and second terminals initially connected by a conductor and a third terminal separated from the conductor at a breakpoint of the conductor by an insulator. By applying a voltage across the third terminal or control terminal and the conductor, a transient conductive link is formed between the conductor and the control terminal. If sufficient current is provided through the transient link, heating of the link causes the metal of the conductor to melt and boil away, thus interrupting the continuity of the conductor.

5390141, Feb 14, 1995

Jul 7, 1993

8/088253

Simon S. Cohen - Burlington MA
Jack I. Raffel - Lexington MA

Massachusetts Institute of Technology - Cambridge MA

G11C 1300

365 96

An electrical path can be formed through a transformable insulator between first and second conductors by applying a voltage between such conductors across at least one selected region of the insulator. Much of the current required to complete the link is provided from parasitic capacitance of the writing circuit or from capacitance which is removable from the circuit during normal operations. As a result, small transistors of less than 100 microamps may be used in the writing circuit which applies the programming voltage.

5641703, Jun 24, 1997

Apr 28, 1995

8/430303

Simon S. Cohen - Burlington MA
Jack I. Raffel - Lexington MA
Peter W. Wyatt - Lincoln MA

Massachusetts Institute of Technology - Cambridge MA

H01L 2182

438467

Methods and systems are discussed for fabricating electrically programmable link structures by fabricating a first metal conductor of a refractory conductive material, composite, or an aluminum alloy which has been modified with a refractory material, then fabricating an insulating link material over the first conductor, and subsequently, depositing a second conductor over the link material. In use, an electrical path can be formed between the first and second conductors by applying a voltage between such conductors across at least one selected region of the insulator, such that the insulating link material is transformed in the region and rendered conductive to form an electrical signal path.

5557137, Sep 17, 1996

Mar 16, 1994

8/210062

Simon S. Cohen - Burlington MA

Massachusetts Institute of Technology - Cambridge MA

H01L 2900, G11C 1700

257530

A voltage programmable link structure reduces parasitic capacitance by using ion implantation. The voltage programmable link structure includes a first conductive element placed over a substrate. A transformable insulator is deposited over the first conductive element. The transformable insulator material is deposited with an ion implanted layer. A second conductive element is deposited over the ion implanted layer. An electrical path is formed between the first and second conductive elements by applying a voltage between the elements across at least one region of the insulator, such that the insulating material is transformed and rendered conductive to form an electrical signal path.

5572050, Nov 5, 1996

Dec 6, 1994

8/349933

Simon S. Cohen - Burlington MA

Massachusetts Institute of Technology - Cambridge MA

H01L 2362, H01L 2358

257209

A programmable integrated circuit for forming conductive links includes a heat-generating programming structure through which current flows upon application of a programming voltage to heat the region around the programming structure. A programmable link structure including two conductors separated by a transformable insulator is in thermal communication with the programming circuit. When current flows through the programming circuit, the programmable link structure is heated. The heat causes the transformable insulator to break down such that a permanent conductive link is formed between the two conductors of the programmable link structure. During programming, a programming conductor is cut symmetrically about the programming structure.

5270251, Dec 14, 1993

Feb 25, 1993

8/022980

Simon S. Cohen - Burlington MA

Massachusetts Institute of Technology - Cambridge MA

H01L 21268

437173

The present invention discloses an incoherent radiation regulated voltage programmable link circuit and a method for making the circuit. The voltage programmable link circuit lowers the programming voltage of the link to that of the normal operating voltage by applying electromagnetic radiation to the link structure. The radiation may be radio frequency radiation, or ultraviolet radiation may be applied through a transparent conductive element.

5304508, Apr 19, 1994

Jun 1, 1993

8/068798

Simon S. Cohen - Burlington MA

Massachusetts Institute of Technology - Cambridge MA

H01L 21479

437170

Methods and systems are disclosed for fabricating electrically programmable link structures by fabricating a first conductor, which comprises a refractory conductive material, then fabricating an insulative link material over the refractory conductive material and, subsequently, depositing an upper conductive material over the link material. In use, an electrical path can be formed between the first and second conductive elements by applying a voltage between such elements across at least one selected region of the insulator, such that the insulative link material is transformed in the region and rendered conducti The U. S. Government has rights in this invention pursuant to Contract No. F19628-90-C-0002 awarded by the Department of the Air Force.

5659182, Aug 19, 1997

May 30, 1995

8/454505

Simon S. Cohen - Burlington MA

Massachusetts Institute of Technology - Cambridge MA

H01L 2904, H01L 2900

257 50

A device and a method for interrupting the continuity of a conductor and linking a pair of conductors are disclosed. The device is a three-terminal fuse having first and second terminals initially connected by a conductor and a third terminal separated from the conductor at a breakpoint of the conductor by an insulator. By applying a voltage across the third terminal or control terminal and the conductor, a transient conductive link is formed between the conductor and the control terminal. If sufficient current is provided through the transient link, heating of the link causes the metal of the conductor to melt and boil away, thus interrupting the continuity of the conductor.