Kathleen Lehman Richardson

US Patent:

6764574, Jul 20, 2004

Filed:

Aug 22, 2001

Appl. No.:

09/938150

Inventors:

Yaw S. Obeng - Orlando FL
Edward M. Yokley - Pembroke Pines FL
Kathleen C. Richardson - Geneva FL

Assignee:

psiloQuest - Orlando FL

International Classification:

H01L 21302

US Classification:

15634512, 383 63, 383113, 451526

Abstract:

The present invention is directed, in general, to packaged polishing pads for chemical mechanical polishing of semiconductor wafers and integrated circuits. More specifically, the invention is directed to a method of preparing and packing the pad and the packaging therefor. Prior to placing the pad on a platen and polishing with the pad, a polishing pad having an hygroscopic absorbency is soaked with an aqueous media for a time sufficient to equilibrate the pad. The pad maybe packaged by placement in a sealable moisture tight package after soaking or before soaking along with a sufficient quantity of aqueous media to allow the pad to equilibrate.

US Patent:

20200079683, Mar 12, 2020

Filed:

Sep 9, 2019

Appl. No.:

16/564047

Inventors:

- ORLANDO FL, US
KATHLEEN RICHARDSON - GENEVA FL, US
MARTIN RICHARDSON - GENEVA FL, US
CHANELLE ARIAS - WINTER PARK FL, US
MYUNGKOO KANG - ORLANDO FL, US

International Classification:

C03C 4/00
C03C 14/00
C09K 11/02
C09K 11/88

Abstract:

An optical nanocomposite containing optically active crystals (rare earth or transition metal doped) in a suitably index-, dispersion-, thermo-optically matched matrix enables creation of a glass ceramic with unique optical properties. By further tuning the viscosity of the composite, it can be drawn into fiber form, dissolved into solution and subsequently deposited as a thin film, or used as a bulk optical component. Critical to achieving a viable material is closely matching the attributes needed to not only achieve optical function but to enable fabrication under elevated temperatures (i.e., during fiber drawing) or in unique chemical or thermal environments, such as during deposition as a thin film. This invention uses nanosized crystalline powders (nanocrystals—NC), blended with multicomponent chalcogenide glass (ChG) to form an optical nanocomposite. The blended NC:glass integrates compositional tailoring to enable matching of optical properties (index, dispersion, dn/dT), specialized dispersion methods to ensure homogeneous physical dispersion of NCs within the glass matrix during preparation, while minimizing agglomeration and mismatch of coefficient of thermal expansion. The latter attributes are critical to maintaining low loss (optical scatter) and induced stress birefringence due to mismatch between the NC and glass' parent properties. By tailoring the base glass composition's viscosity versus temperature profile, the resulting bulk nanocomposite can be further formed to create an optical fiber, while maintaining physical dispersion on NCs, avoiding segregation of the NCs. This enables low loss conditions suitable for lasing within the material.

US Patent:

20190322577, Oct 24, 2019

Filed:

Jun 27, 2017

Appl. No.:

16/312759

Inventors:

- Bordeaux, FR
- Talence Cedex, FR
- Paris Cedex 16, FR
- Orlando FL, US
Frédéric ADAMIETZ - Le Haillan, FR
Thierry CARDINAL - Salles, FR
Evelyne Claude FARGIN - Gradignan, FR
Kathleen RICHARDSON - Geneva FL, US

Assignee:

Universite de Bordeaux - Bordeaux
Institut Polytechnique de Bordeaux - Talence Cedex
Centre National de la Recherche Scientifique (CNRS) - Paris Cedex 16
University of Central Florida Research Foundation, Inc - Orlando FL

International Classification:

C03C 23/00
G02B 3/00

Abstract:

A device for inducing by thermal poling a spatially controlled refractive index gradient inside at least one amorphous inorganic material to be treated, includes a structured electrode arranged on the surface or in proximity to the surface of the material to be treated; and at least one dielectric material. The structured electrode includes at least one conductive zone and at least one non-conductive zone and it is confined between the amorphous inorganic material to be treated and the dielectric material.

US Patent:

20180050955, Feb 22, 2018

Filed:

Aug 18, 2016

Appl. No.:

15/240975

Inventors:

- Bethesda MD, US
- Orlando FL, US
Kathleen A. RICHARDSON - Geneva FL, US
Jeffrey Linn RUCKMAN - Orlando FL, US

International Classification:

C03C 3/32
C03B 25/02

Abstract:

Ternary chalcogenide glass materials containing germanium can display enhanced properties compared to corresponding binary chalcogenide glass materials lacking germanium. For instance, ternary chalcogenide glass materials containing germanium, arsenic and selenium can exhibit improved Vickers micro-hardness values and other enhanced mechanical properties while still maintaining small changes in refractive index as function of temperature. Such ternary glass materials can have a formula of (AsSe)Ge, in which x ranges between about 1 and 5, y ranges between about 30 and 40, z ranges between about 60 and 70, and y+z=100. Methods for producing the ternary glass materials can include blending arsenic, selenium, and germanium as a melt, and cooling the melt to form the ternary glass material.