Paul D Calvert

US Patent:

6401795, Jun 11, 2002

Filed:

Jan 3, 2000

Appl. No.:

09/476940

Inventors:

Joseph Cesarano, III - Albuquerque NM
Paul D. Calvert - Tucson AZ

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

B22D 2300

US Classification:

164 46, 264113, 264308, 264401, 264497, 264669

Abstract:

In a rapid prototyping system, a part is formed by depositing a bead of slurry that has a sufficient high concentration of particles to be pseudoplastic and almost no organic binders. After deposition the bead is heated to drive off sufficient liquid to cause the bead to become dilatant.

US Patent:

6528571, Mar 4, 2003

Filed:

Nov 22, 2000

Appl. No.:

09/721300

Inventors:

Sevim Z. Erhan - Peoria IL
Zengshe Liu - Peoria IL
Paul D. Calvert - Tucson AZ

Assignee:

The United States of America as represented by the Secretary of Agriculture - Washington DC

International Classification:

C08K 334

US Classification:

524494, 524109, 524252, 524492

Abstract:

Composite formulations useful in the production of objects by the solid freeform fabrication method comprise (A) an epoxidized drying oil (primary resin); (B) a curing agent; (C) a fibrous filler; (D) a thixotropic agent and optionally (E) a secondary resin. These composites are characterized by unique physical properties including enhanced biodegradability.

US Patent:

8437492, May 7, 2013

Filed:

Mar 18, 2011

Appl. No.:

13/051418

Inventors:

Steven Goldstein - Delray Beach FL, US
John Patrick Keady - Fairfax Station VA, US
Paul Calvert - Assonet MA, US

Assignee:

Personics Holdings, Inc. - Boca Raton FL

International Classification:

H04R 25/00

US Classification:

381380, 381326, 381328

Abstract:

An earpiece is provided containing a thermal activator layer comprised of a first polymer, the thermal activator layer being separated from the tympanic membrane of the user's ear by an air gap, and an acoustical reflector layer, containing a second polymer and pigment particles, adjacent to the thermal activator layer. The earpiece may be produced by sequential introduction of various liquefied components in layers within the ear canal, with the components being cured to provide the thermal activator layer and the acoustical reflector layer.

US Patent:

8608893, Dec 17, 2013

Filed:

Jan 16, 2009

Appl. No.:

12/354987

Inventors:

Paul D. Calvert - Assonet MA, US

Assignee:

University of Massachusetts - North Dartmouth MA

International Classification:

B29C 65/62

US Classification:

1562753, 156 88, 1563047

Abstract:

A system is provided for joining fabrics by lines or arrays of dots of adhesive, the system comprising: a blue light source; a dispenser, disposed proximally with the blue light source, the dispensing system being configured to deposit at least one drop of a monomer on first and second proximate fabric surfaces; a conveyance whereby the light source and the dispensing system change position relative to the first and second fabric surfaces.

US Patent:

20020143403, Oct 3, 2002

Filed:

Jan 2, 2002

Appl. No.:

10/038398

Inventors:

K. Vaidyanathan - Tucson AZ, US
Joseph Walish - Tucson AZ, US
Paul Calvert - Tucson AZ, US

International Classification:

A61F002/28

US Classification:

623/023510, 623/023750

Abstract:

The present invention relates to biomedical implants for bone substitution and replacement applications. The implant includes a strong, porous polymeric or thermoplastic compositions and growth-enhancing compositions.

US Patent:

59068639, May 25, 1999

Filed:

Apr 26, 1996

Appl. No.:

8/638609

Inventors:

John Lombardi - Tucson AZ
Anthony Mulligan - Tucson AZ
Paul Calvert - Tucson AZ
Peter Creegan - Tucson AZ
Kevin Stuffle - Tucson AZ

International Classification:

B05D 300
B05D 302

US Classification:

4273855

Abstract:

The present invention generally relates compositions and methods for the preparation of three-dimensional bodies, e. g. , green bodies, ceramic-loaded green bodies, and polymer matrix composites, by the controlled, sequential deposition of layers of material upon one another. The method for preparing a green body comprises depositing a liquid composition having a viscosity of at least about 10 poise and comprising thermally-polymerizable components onto a base in a predetermined pattern to form a layer of the liquid composition on the base. Subsequently, at least one further layer of the liquid composition is deposited on a previously-formed layer in a predetermined pattern to form a multi-layered intermediate and, then, the multi-layered intermediate is heated to cause the thermally-polymerizable components to polymerize, providing the three-dimensional green body. Another method of the present invention provides a method for reinforcing a green body with fibers. More than simply reinforcing the body, however, this particular aspect of the present invention allows the alignment of reinforcing fibers in the body to be controlled.

US Patent:

60273267, Feb 22, 2000

Filed:

Oct 28, 1997

Appl. No.:

8/958973

Inventors:

Joseph Cesarano - Albuquerque NM
Paul D. Calvert - Tucson AZ

Assignee:

Sandia Corporation - Albuquerque NM

International Classification:

B29C 2508

US Classification:

425375

Abstract:

In a rapid prototyping system, a part is formed by depositing a bead of slurry that has a sufficient high concentration of particles to be pseudoplastic and almost no organic binders. After deposition the bead is heated to drive off sufficient liquid to cause the bead to become dilatant.

US Patent:

61299286, Oct 10, 2000

Filed:

Sep 4, 1998

Appl. No.:

9/148724

Inventors:

Shantha Sarangapani - Walpole MA
Paul D. Calvert - Tucson AZ

Assignee:

ICET, Inc. - Norwood MA

International Classification:

A61F 228
A61K 3342

US Classification:

424423

Abstract:

This invention encompasses porous, nanocrystalline, biomimetic calcium phosphate coatings of the order of 2-30 microns that can be grown on metal implants. The chemical surface treatments and methods for making the calcium phosphate coatings are disclosed. Post treatment with dilute hydrogels such as phema reinforce the inorganic structure and enhance the mechanical strength of the coatings. Methods are also disclosed for adsorbing or covalently attaching growth factor proteins to derivatives of the hydrogel coated calcium phosphate coatings. Such hydrogel reinforced calcium phosphate coatings show equivalent bone tissue growth as the currently used implants and are easily resorbed. This property in combination with the immobilized growth factors is expected to enhance the process of osseointegration of the disclosed coatings.