Kyu Yong Lee

6648774, Nov 18, 2003

May 1, 2002

10/136185

Kyu Wang Lee - Danville CA

Callaway Golf Company - Carlsbad CA

A63B 5304

473342, 473345, 473350, 473329, 473347

The present invention provides a hollow golf club head comprising a metal striking insert and a composite body. The metal striking insert ( ) is molding within the front face wall ( ) of the club head body and is securely attached at the outside perimeter of the insert to the composite body and at the front corners of the composite body through the use of a sandwiched structure ( ). The sandwich structure formed at the boundaries of the striking metal insert efficiently dissipates the impact energy affected when a golf ball is hit. The structure also dampens efficiently the vibrations of the shock affected when the ball is hit on the metal striking insert. The present invention of positioning the insert inside the face wall, not extending outside the face wall, uses less metal material which is heavier than the composite material and makes a larger club head at the same total weight of the club head. A larger golf club head that gives a higher moment of inertia is highly sought-after for a hollow club head construction.

6860823, Mar 1, 2005

Nov 14, 2003

10/707024

Kyu Wang Lee - Danville CA, US

Callaway Golf Company - Carlsbad CA

A63B053/04

473329, 473342, 473345, 473349

A golf club head () having a body () with a front wall () with an opening () and a face component () is disclosed herein. The face component () has a striking plate and a return portion. The return portion () creates a sandwich structure () with edges (and ) of the body (). The body () is preferably composed of a light weight non-metal material. The golf club head () preferably has a volume between 300 cubic centimeters and 600 cubic centimeters. The golf club head () preferably has a mass between 105 grams and 300 grams.

49390198, Jul 3, 1990

Nov 15, 1989

7/436834

Ching-Chi Kuo - Pleasanton CA
Mark Robertson - Fremont CA
Kyu W. Lee - Danville CA

Hexcel Corporation - Dublin CA

B32B 900
B32B 326
B32B 2700

4283184

Plastic foam materials having a high degree of structural integrity, cell network uniformity and small cell size are obtained from (meth)acrylic acid and (meth)acrylonitrile by incorporating acrylamide as a comonomer additive within certain ranges of concentration. Incorporation of the latter together with conventional additives normally used in preparing foams from the principal monomers helps to avoid preliminary precipitation during the polymerization process, and the gradients in the polymer microstructure which frequently result and cause internal stresses and weaknesses in the ultimate product.

48248746, Apr 25, 1989

Sep 9, 1986

6/905718

Kyu W. Lee - Danville CA

Hexcel Corporation - San Francisco CA

C08J 900

521127

Open-cell structures are filled with polyimide foam formed in place by the use of a foam precursor in powdered form comprised of a combination of (a) the reaction product of an excess of organic polyisocyanate and a member selected from the group consisting of furfuryl alcohol and condensation products thereof, and (b) an organic polycarboxylic compound containing two carboxylic anhydride groups. The precursor is prepared by combining the species under conditions which favor the reaction of the furfuryl alcohol with the polyisocyanate, but not the polyimide-forming reaction. The polyimide-forming reaction itself is then performed by adding preselected amounts of the powdered precursor, depending on the desired ultimate density of the foam, to each cell of the open-cell structure, then heating to initiate the polyimide reaction, and permitting the carbon dioxide generated by the reaction to escape while confining the resulting foam to the cells.

49181106, Apr 17, 1990

Sep 12, 1988

7/243383

Ching-Chi Kuo - Pleasanton CA
Mark Robertson - Fremont CA
Kyu W. Lee - Danville CA

Hexcel Corporation - San Francisco CA

C08J 910
C08J 912

521 82

Plastic foam materials having a high degree of structural integrity, cell network uniformity and small cell size are obtained from (meth)acrylic acid and (meth)acrylonitrile by incorporating acrylamide as a comonomer additive within certain ranges of concentration. Incorporation of the latter together with conventional additives normally used in preparing foams from the principal monomers helps to avoid preliminary precipitation during the polymerization process, and the gradients in the polymer microstructure which frequently result and cause internal stresses and weaknesses in the ultimate product.

48308838, May 16, 1989

Jun 22, 1988

7/209757

Kyu W. Lee - Danville CA

Hexcel Corporation - San Francisco CA

C08J 940

427244

Open-cell structures are filled with polyimide foam formed in place by the use of a foam precursor in powdered form comprised of a combination of (a) the reaction product of an excess of organic polyisocyanate and a member selected from the group consisting of furfuryl alcohol and condensation products thereof, and (b) an organic polycarboxylic compound containing two carboxylic anhydride groups. The precursor is prepared by combining the species under conditions which favor the reaction of the furfuryl alcohol with the polyisocyanate, but not the polyimide-forming reaction. The polyimide-forming reaction itself is then performed by adding preselected amounts of the powdered precursor, depending on the desired ultimate density of the foam, to each cell of the open-cell structure, then heating to initiate the polyimide reaction, and permitting the carbon dioxide generated by the reaction to escape while confining the resulting foam to the cells.

48065730, Feb 21, 1989

Jun 22, 1988

7/209760

Kyu W. Lee - Danville CA

Hexcel Corporation - San Francisco CA

C08J 900

521157

Open-cell structures are filled with polyimide foam formed in place by the use of a foam precursor in powdered form comprised of a combination of (a) the reaction product of an excess of organic polyisocyanate and a member selected from the group consisting of furfuryl alcohol and condensation products thereof, and (b) an organic polycarboxylic compound containing two carboxylic anhydride groups. The precursor is prepared by combining the species under conditions which favor the reaction of the furfuryl alcohol with the polyisocyanate, but not the polyimide-forming reaction. The polyimide-forming reaction itself is then performed by adding preselected amounts of the powdered precursor, depending on the desired ultimate density of the foam, to each cell of the open-cell structure, then heating to initiate the polyimide reaction, and permitting the carbon dioxide generated by the reaction to escape while confining the resulting foam to the cells.

20210153798, May 27, 2021

Nov 25, 2020

17/104902

- Pasadena CA, US
Kyu Hyun Lee - San Francisco CA, US
Yu-Li Ni - Pasadena CA, US

California Institute of Technology - Pasadena CA

A61B 5/304
A61B 5/273
A61B 5/00

A method includes providing a first electrode and a second electrode, receiving a first plurality of signals from the first electrode during a first period of time, and receiving a second plurality of signals from the second electrode during a second period of time. The method also includes receiving a pooled signal comprising a third plurality of signals from the first electrode and a fourth plurality of signals from the second electrode and isolating, from the pooled signal, one or more of the third plurality of signals and one or more of the fourth plurality of signals.