Stephen J Derezinski

Address:

15 Saint Ebbas Dr, Penfield, NY 14526

Phone:

5852489343

VIN:

WBAVA33577PG39568

Make:

BMW

Model:

3 SERIES

Year:

2007

US Patent:

6513963, Feb 4, 2003

Filed:

Jan 19, 2001

Appl. No.:

09/766199

Inventors:

Stephen J. Derezinski - Penfield NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B29B 742

US Classification:

366 89

Abstract:

A vented, multi-staged rotary screw extruder is taught for extruding thermoplastic materials. The screw has a final pumping-section of the screw that includes two or more channel depths which provides exit-pressure and flow stability. The channel-depth of the first segment of the final pumping-section is deeper than the channel depth of the second segment of the final pumping-section. The axial length of the first segment is preferably about two-thirds ( ) of the final pumping-section length. The deeper first channel-depth acts as a reservoir resulting in smaller fluctuations in axial final fill-length as the input flow to the total pumping-section varies. The second channel-depth in the remaining approximate one-third () of the total pumping-section is preferably sized so as to optimize pressure development.

US Patent:

20120292198, Nov 22, 2012

Filed:

Dec 5, 2011

Appl. No.:

13/575657

Inventors:

Stephen Joseph Derezinski - Wellesley MA, US
Adam Clayton Powell - Newton MA, US

Assignee:

METAL OXYGEN SEPARATION TECHNOLOGIES, INC. - Natick MA

International Classification:

C25C 3/34
C25C 7/00

US Classification:

205368, 2042431

Abstract:

In one aspect, the present invention is directed to methods for extracting rare earth metals from ores comprising reduction of rare earth metal oxyfluorides. In another aspect, the invention relates to an apparatus for extracting rare earth metals from ores comprising reduction of rare earth metal oxyfluorides. The methods and apparatuses described herein generate rare earth metals from ores with reduced requisite pre-removal of metal oxides found as natural impurities in ores.

US Patent:

20130192998, Aug 1, 2013

Filed:

Aug 31, 2012

Appl. No.:

13/600761

Inventors:

Stephen Joseph Derezinski - Wellesley MA, US
Garrett Lau - Palmetto Bay FL, US
Uday B. Pal - Dover MA, US
Xiaofei Guan - Boston MA, US
Srikanth Gopalan - Westborough MA, US

International Classification:

C25C 7/02

US Classification:

205354, 2042431, 29825

Abstract:

In one aspect, the present invention is directed to apparatuses for and methods of conducting electrical current in an oxygen and liquid metal environment. In another aspect, the invention relates to methods for production of metals from their oxides comprising providing a cathode in electrical contact with a molten electrolyte, providing a liquid metal anode separated from the cathode and the molten electrolyte by a solid oxygen ion conducting membrane, providing a current collector at the anode, and establishing a potential between the cathode and the anode.

US Patent:

20130264212, Oct 10, 2013

Filed:

Jun 10, 2013

Appl. No.:

13/913745

Inventors:

Stephen Joseph DEREZINSKI - Wellesley MA, US

Assignee:

INFINIUM, INC. - Natick MA

International Classification:

C25D 9/08

US Classification:

205 99

Abstract:

Electrowinning methods and apparatus are suitable for producing elemental deposits of high quality, purity, and volume. Respective cathodes are used during electrowinning for bearing the elemental product, segregating impurities, dissolving morphologically undesirable material, and augmenting productivity. Silicon suitable for use in photovoltaic devices may be electrodeposited in solid form from silicon dioxide dissolved in a molten salt.

US Patent:

20140033871, Feb 6, 2014

Filed:

Oct 4, 2013

Appl. No.:

14/046476

Inventors:

Jason DOUGLAS - Prospect KY, US
Stephen Joseph DEREZINSKI - Wellesley MA, US
Luciano SPIRIDIGLIOZZI - North Reading MA, US
Michael BUCHMAN - Boston MA, US
Thomas EAGAR - Belmont MA, US

Assignee:

INFINIUM, INC. - Natick MA

International Classification:

C22B 9/00

US Classification:

75414

Abstract:

An apparatus for condensing metal vapors has at least one inlet conduit that is cooled to cause a portion of the metal vapor to condense to liquid. The apparatus also has a holding tank that is connected to the inlet conduit that collects condensed liquid metal. The apparatus also has at least one outlet conduit connected to the holding tank that is cooled to cause a portion of the remaining metal vapor to condense to solid metal. The apparatus also has at least one heater that heats the at least one outlet conduit to cause the solid metal to melt to liquid metal and subsequently flow in to the holding tank. The apparatus also has at least one sealing mechanism located at a distal end of the at least one outlet conduit for preventing metal vapor and carrier gas from exiting the outlet conduit during heating of the outlet conduit.

US Patent:

53583272, Oct 25, 1994

Filed:

Sep 9, 1992

Appl. No.:

7/942253

Inventors:

Stephen J. Derezinski - Penfield NY
Stephen T. Faulkenberry - Conesus NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B29B 746
B29B 1302
B29C 4750
B29C 4780

US Classification:

366 79

Abstract:

A plasticizing apparatus (10) including a barrel (12) having a bore (14) therethrough. An auger (24) and a rotor (30) are positioned in the bore, each extending from opposed ends (16, 18) of the barrel (12) and having ends (26, 34) that are substantially flush. The auger (24) conveys particulate plastic material along the bore (14), the plastic being frictionally melted before passing the auger discharge end (26). The rotor (30) is provided to uniformly heat the melted plastic. Auger (24) and rotor (30) each are associated with independent means for rotating (28, 32) and means for controlling the speed of rotation (50, 52). The speed of rotation of the auger (24) controls the flow rate of plastic through the bore, and the speed of rotation of the rotor (30) controls the temperature of the melted plastic.

US Patent:

53206797, Jun 14, 1994

Filed:

Jul 28, 1993

Appl. No.:

8/098179

Inventors:

Stephen J. Derezinski - Penfield NY
Don T. Ras - Webster NY
Brian M. Fauci - Holley NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B05C 302

US Classification:

118412

Abstract:

A criss cross coating hopper 10 is provided which is capable of producing uniform flow distribution patterns. The hopper 10 is comprised of a first and second hopper halves 12,14. First and second hopper halves 12,14 each have a first and second planar surface 20,40, respectively, adjoining a first and second cavity 22,42, respectively, each cavity 22,42 having a land surface 28,50 near the entrance end 26,48 and exit end 24,46. Inserts 62,64 are positioned against the land surface 60 of the first hopper half 12 and the land surface 50 of the second hopper half 14, respectively. The first and second hopper halves 12,14 and the inserts 62,64 cooperate to form an exit slot 69 recessed into first and second planar surfaces 20,40.

US Patent:

55001726, Mar 19, 1996

Filed:

Jun 14, 1994

Appl. No.:

8/259430

Inventors:

Stephen J. Derezinski - Penfield NY
Stephen T. Faulkenberry - Conesus NY

Assignee:

Eastman Kodak Company - Rochester NY

International Classification:

B29B 746
B29C 4780

US Classification:

264 68

Abstract:

A plasticizing method uses an apparatus (10) including a barrel (12) having a bore (14) therethrough. An auger (24) and a rotor (30) are positioned in the bore, each extending from opposed ends (16, 18) of the barrel (12) and having ends (26, 34) that are substantially flush. The auger (24) conveys particulate plastic material along the bore (14), the plastic being frictionally melted before passing the auger discharge end (26). The rotor (30) is provided to uniformly heat the melted plastic. Auger (24) and rotor (30) each are associated with independent means for rotating (28, 32) and means for controlling the speed of rotation (50, 52). The speed of rotation of the auger (24) controls the flow rate of plastic through the bore, and the speed of rotation of the rotor (30) controls the temperature of the melted plastic.