Eic Laboratories, Inc.

Stuart F Cogan

R David Rauh

Philip R Troyk

John S Ebersole

Vernon L Towle

Subdural arrays transmit electrocorticogram recordings wirelessly, across the patient's skull, allowing the craniotomy used for surgical placement of the arrays to be completely closed. In various embodiments, the arrays also respond to commands, applying signal patterns to the patient's brain for diagnostic and treatment purposes.

Wireless recording and stimulation of brain activity

An electro-optical device having an oxidatively coloring electrochromic layer of composition Mn.sub.x V.sub.y O.sub.z, where 0.05 x/y&lt;1, x+2y&lt;z&lt;2x+(5/2)y, and x+y=1, with improved transmittance modulation, the Mn.sub.x V.sub.y O.sub.z providing complementary optical modulation to reductively coloring electrochromic materials in devices employing an all-thin-film configuration with a solid ion conducting electrolyte and in devices employing a laminated configuration with a polymeric ion conducting electrolyte.

Oxidatively coloring electrochromic material and electro-optical device

A biomedical device provided with a protective overlayer with high electronic resistivity and low permeability to H.sub.2 O; the protective overlayer comprising at least one thin film of amorphous silicon oxycarbide (a-SiOC:H) in which the oxygen/carbon ratio is such that the electronic resistivity of the a-SiOC:H is greater than 10.sup.14 .OMEGA.-cm and the H.sub.2 O permeability is less than 5.times.10.sup.14 molecules/sec-cm.sup.2.

Biomedical device with a protective overlayer

An electro-optical device comprising a series of thin films with an electrically controllable optical state provided with a protective overlayer that has a high optical transmittance and high resistance to penetration by H.sub.2 O. The protective overlayer is a film of amorphous silicon oxycarbide (a-SiOC:H) having an O to C ratio such that the optical absorption edge of the a-SiOC:H is 3 eV or greater and the H.sub.2 O transport through a 500 nm thick film of a-SiOC:H is 10.sup.12 molecules/cm.sup.2 -s or less.

Protective overlayer material and electro-optical coating using same

Polymer electrolytes comprising co-polymers of vinylic, protonic acids and N,N' dialkyl substituted acrylamides and methacrylamides with high anodic stability, reduced acidity and high mechanical stiffness suitable for electrochromic devices, such as windows, mirrors and information displays. A preferred embodiment of the invention is a co-polymer with a composition of 30% 2-acrylamido-2-methyl propane sulfonic acid, 50% N,N dimethyl acrylamide and 20% water by weight.

Solid polymeric electrolytes for electrochromic devices having reduced

A method for preparing an oxidatively coloring electrochromic layer of composition M.sub.y CrO.sub.2+x (0.33.ltoreq.y.ltoreq.2.0 and x.ltoreq.2) where M=Li, Na or K and an electrochromic devise employing this layer with improved transmittance modulation, improved thermal and environmental stability, and improved resistance to degradation in organic liquid and polymeric electrolytes. The M.sub.y CrO.sub.2+x provides complementary optical modulation to cathodically coloring materials in thin-film electrochromic glazings and electrochromic devices employing polymeric Li.sup.+ ion conductors.

Method for producing electrochromic material and electro-optical device

An oxidatively coloring electrochromic layer of composition M.sub.y CrO.sub.2+x (0.33.ltoreq.y.ltoreq.2.0 and x.ltoreq.2) where M=Li, Na or K with improved transmittance modulation, improved thermal and environmental stability, and improved resistance to degradation in organic liquid and polymeric electrolytes. The M.sub.y CrO.sub.2+x provides complementary optical modulation to cathodically coloring materials in thin-film electrochromic glazings and electrochromic devices employing polymeric Li.sup.+ ion conductors.

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Sudbury, MA, United States of America

Stuart F Cogan