Larry Wayne Shipley

US Patent:

48730912, Oct 10, 1989

Filed:

May 23, 1988

Appl. No.:

7/197375

Inventors:

Laura J. Jankower - Lafayette LA
Larry W. Shipley - Lafayette LA

Assignee:

Advanced Polymer Systems, Inc. - Redwood City CA

International Classification:

A61K 914
C08J 928

US Classification:

424489

Abstract:

Microscopic particles containing a continuous network of pores open to the particle surface are manufactured of a spongy material. The particles are useful as controlled-release delivery systems for active substances intended for a wide range of uses including topical applications. The spongy character of the particles enhances their usefulness in applications where high pressure or high temperature are encountered, and where exceptional smoothness of feel is required.

US Patent:

52564002, Oct 26, 1993

Filed:

Dec 4, 1991

Appl. No.:

7/803298

Inventors:

Michael Froix - Mountain View CA
Larry Shipley - Lafayette LA
Hien Nguyen - Los Osos CA
Sok L. Khor - Palo Alto CA

Assignee:

Advanced Polymer Systems, Inc. - Redwood City CA

International Classification:

A61L 904

US Classification:

424 45

Abstract:

An apparatus for dispensing pressurized material is comprised of a container, a polymeric matrix having a network of macropores located within the container, and a propellant that may be reversibly sorbed with the network of macropores so as to desorb as the partial pressure of the propellant within the container decreases. The network of pores is substantially non-swellable upon sorption and desorption of the propellant during filling and use of the dispensing apparatus. The polymeric matrix may comprise aggregates of macroporous polymeric particles in which the particles define a substantially non-collapsible pore network and the aggregates define interstitial spaces between the particles, and the interstitial spaces are substantially larger than the pore network.

US Patent:

55101160, Apr 23, 1996

Filed:

Jul 21, 1993

Appl. No.:

8/095611

Inventors:

Michael Froix - Mountain View CA
Larry Shipley - Lafayette LA
Hien Nguyen - Los Oso CA
Sok L. Khor - Palo Alto CA

Assignee:

Advanced Polymer Systems, Inc. - Redwood City CA

International Classification:

A61L 904

US Classification:

424486

Abstract:

An apparatus for dispensing pressurized material is comprised of a container, a polymeric matrix having a network of macropores located within the container, and a propellant that may be reversibly sorbed with the network of macropores so as to desorb as the partial pressure of the propellant within the container decreases. The network of pores is substantially non-swellable upon sorption and desorption of the propellant during filling and use of the dispensing apparatus. The polymeric matrix may comprise aggregates of macroporous polymeric particles in which the particles define a substantially non-collapsible pore network and the aggregates define interstitial spaces between the particles, and the interstitial spaces are substantially larger than the pore network.

US Patent:

20200071170, Mar 5, 2020

Filed:

Aug 23, 2019

Appl. No.:

16/549667

Inventors:

- Jonesboro AR, US
Larry W. Shipley - Jonesboro AR, US
Leo Gingras - Kinder LA, US

International Classification:

C01B 33/12

Abstract:

Porous amorphous silica can be obtained from siliceous plant matter containing non-siliceous inorganic substances. The siliceous plant matter is soaked in an aqueous solution which includes a chelating agent. The chelating agent is present in an amount which helps to extract at least some of the non-siliceous inorganic matter. The aqueous solution is then separated from the siliceous plant matter. Beneficial properties are imparted to the siliceous plant matter by controlling the amount of at least one preselected non-siliceous inorganic substance in the siliceous plant matter. At the end of the process, the siliceous plant matter is heat treated in the presence of oxygen at a temperature to produce the resulting amorphous silica having the beneficial properties.