Yong Q Li

US Patent:

6379494, Apr 30, 2002

Filed:

Oct 15, 1999

Appl. No.:

09/418909

Inventors:

Richard A. Jewell - Bellevue WA
Joseph Lincoln Komen - Bothell WA
Yong Li - Tacoma WA
Bing Su - Federal Way WA

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

D21H 1120

US Classification:

162 9, 1621576, 8181, 81161, 811551

Abstract:

The invention is directed to a method of making carboxylated cellulose fibers whose fiber strength and degree of polymerization is not significantly sacrificed. The method involves the use of TEMPO (2,2,6,6-tetramethylpiperidinyloxy free radical) as a primary oxidant and a hypohalite salt as a secondary oxidant in an aqueous environment. Preferably the oxidized cellulose is then stabilized against D. P. loss in alkaline environments and color reversion with a reducing agent such as sodium borohydride. Alternatively it may be treated with an oxidant such as sodium chlorite. The method results in a high percentage of carboxyl groups located at the fiber surface. The product is especially useful as a papermaking fiber where it contributes strength and has a higher attraction for cationic additives. The product is also useful as an additive to recycled fiber to increase strength. The method can be used to improve properties of either virgin or recycled fiber.

US Patent:

6524348, Feb 25, 2003

Filed:

Aug 17, 2000

Appl. No.:

09/641276

Inventors:

Richard A. Jewell - Bellevue WA
Joseph Lincoln Komen - Bothell WA
Bing Su - Federal Way WA
S. Ananda Weerawarna - Seattle WA
Yong Li - Tacoma WA

Assignee:

Weyerhaeuser Company - Federal Way WA

International Classification:

D06M 2300

US Classification:

81161, 8181, 162 9

Abstract:

The invention is directed to a method of making carboxylated cellulose fibers whose fiber strength and degree of polymerization is not significantly sacrificed. The method involves the use of cyclic nitroxide free radical compounds as a primary oxidant and a hypohalite salt as a secondary oxidant in an aqueous environment. Preferably the oxidized cellulose is then stabilized against D. P. loss in alkaline environments and color reversion with a reducing agent such as sodium borohydride. Alternatively it may be treated with an oxidant such as sodium chlorite. The method results in a high percentage of carboxyl groups located at the fiber surface. The product is especially useful as a papermaking fiber where it contributes strength and has a higher attraction for cationic additives. The product is also useful as an additive to recycled fiber to increase strength. The method can be used to improve properties of either virgin or recycled fiber.

US Patent:

20030139718, Jul 24, 2003

Filed:

Nov 13, 2002

Appl. No.:

10/294240

Inventors:

Peter Graef - Puyallup WA, US
Fred Howard - Olalla WA, US
Charles Miller - Tacoma WA, US
Clifford Bolstad - Federal Way WA, US
Colin Elston - Gig Harbor WA, US
David Marsh - Federal Way WA, US
Richard Edmark - Seattle WA, US
Terry Grant - Auburn WA, US
Daniel Bunker - Karhula, FI
Yong Li - Tacoma WA, US
Kay Rokman - Karhula, FI
Juhani Jansson - Karhula, FI
Eino Laine - Karhula, FI

Assignee:

Weyerhaeuser Company

International Classification:

A61F013/15

US Classification:

604/374000, 604/372000, 604/378000

Abstract:

An absorbent composite having a reticulated core and a fibrous stratum is disclosed. The core and stratum are integrally formed, and the stratum is coextensive with a surface of the core. In one embodiment, the composite includes strata on opposing surfaces of the core. The core includes a fibrous matrix and absorbent material. The fibrous matrix defines voids and passages between the voids, which are distributed throughout the composite. Absorbent material is located within some of the voids. On wetting, absorbent material located in these voids is expandable into the void. Methods for forming the composite and absorbent articles that include the composite are also disclosed.

US Patent:

20140359153, Dec 4, 2014

Filed:

Jun 28, 2013

Appl. No.:

13/931155

Inventors:

- Irvine CA, US
Wade Keith Wan - Orange CA, US
Yong Li - San Diego CA, US
Xuemin Chen - Rancho Santa Fe CA, US

International Classification:

H04L 29/06

US Classification:

709231

Abstract:

Systems and methods for transmitting content are provided. In some aspects, a method includes receiving an indication of a plurality of input streams of content. Each input stream is associated with an input bit rate. The method includes determining a plurality of output bit rates at which to transmit the content to one or more client devices, comparing the plurality of input bit rates to the plurality of output bit rates, and generating, by a server, a plurality of output streams of the content based on the comparison. Each generated output stream is associated with a corresponding output bit rate and includes a transcoded input stream or a non-transcoded input stream. The plurality of output streams is generated such that a number of output streams comprising non-transcoded input streams is maximized. The method also includes transmitting the generated output streams to the one or more client devices.