Samuel C Ellis

US Patent:

7790117, Sep 7, 2010

Filed:

Mar 21, 2008

Appl. No.:

12/053241

Inventors:

Samuel A. Ellis - Oceanside CA, US
Kishan G. Hingorani - Irvine CA, US

Assignee:

Scientific Plastic Products, Inc. - Oceanside CA

International Classification:

B01L 99/00
G01N 1/18
B01D 24/28
B01D 24/00
B01D 25/00
B01D 27/00
B01D 29/00
B01D 33/00
B01D 35/00

US Classification:

422101, 436178, 210359, 210459, 210460

Abstract:

A filter vial and piston are provided where the vial has a cylindrical wall with a closed bottom and open top and with the hollow, tubular piston therein. The piston has a distal end covered by a cup having a proximal cup seal extending outward to engage the walls of the vial to form a fluid tight seal with the vial during use. The distal end of the piston has a piston flange extending outwardly and located adjacent a recess in the piston so the cup forms a snap fit over the piston flange and extends into the recess. The piston flange causes the cup to bulge sufficiently outward to form a fluid tight seal with the vial during use. A filter is placed in the bottom of the cup.

US Patent:

8211384, Jul 3, 2012

Filed:

Aug 13, 2010

Appl. No.:

12/856324

Inventors:

Samuel A. Ellis - Oceanside CA, US
Kishan G. Hingorani - Irvine CA, US

Assignee:

Scientific Plastic Products, Inc. - Oceanside CA

International Classification:

B01L 3/02
B01D 21/00
B01D 35/00
B01D 41/00
B01D 24/28
B01D 24/00
B01D 25/00
B01D 27/00
B01D 29/00
B01D 33/00
G01N 1/18

US Classification:

422534, 422513, 422527, 436178, 210359, 210459, 210460

Abstract:

A filter vial and piston are provided where the vial has a cylindrical wall with a closed bottom and open top and with the hollow, tubular piston therein. The piston has a distal end covered by a cup having a proximal cup seal extending outward to engage the walls of the vial to form a fluid tight seal with the vial during use. The distal end of the piston has a piston flange extending outwardly and located adjacent a recess in the piston so the cup forms a snap fit over the piston flange and extends into the recess. The piston flange causes the cup to bulge sufficiently outward to form a fluid tight seal with the vial during use. A filter is placed in the bottom of the cup and abuts an inwardly extending lip on the cup. The filter is held against the lip by a piston support at the distal end of the piston. A cup support at a distal end of the cup also helps support the filter.

US Patent:

8322539, Dec 4, 2012

Filed:

Mar 2, 2012

Appl. No.:

13/411225

Inventors:

Samuel A. Ellis - Oceanside CA, US
Kishan G. Hingorani - Oceanside CA, US

Assignee:

Scientific Plastic Products, Inc. - Oceanside CA

International Classification:

B01D 33/00

US Classification:

2104161, 436178

Abstract:

A filter vial for separating biological and chemical fluids has a cylindrical sidewall with an open top and a closed bottom. A protrusion extends upwards from the middle of the bottom to form an annular recess. A tubular plunger has an open bottom end to which is fastened an annular cup having an outer sidewall sized to fit into and seal against the vial's sidewall. An inner sidewall of the annular cup holds a filter over an opening in the bottom of the plunger and forms a shaped cavity leading to that filter. The annular cup on the plunger fits into the annular recess in the vial to force fluid from the vial through the filter and into the plunger.

US Patent:

8383066, Feb 26, 2013

Filed:

Jun 12, 2012

Appl. No.:

13/494865

Inventors:

Samuel A. Ellis - Oceanside CA, US
Kishan G. Hingorani - Irvine CA, US

Assignee:

Scientific Plastic Products, Inc. - Oceanside CA

International Classification:

B01D 35/00
B01D 21/00
B01D 24/28
B01D 33/00
B01D 35/22
B01D 24/00
B01D 25/00
B01D 27/00
B01D 29/00
B01L 3/02
G01N 1/18

US Classification:

422534, 422513, 422527, 436178, 210359, 210459, 210460

Abstract:

A filter vial and piston are provided where the vial has a cylindrical wall with a closed bottom and open top and with the hollow, tubular piston therein. The piston has a distal end covered by a cup having a proximal cup seal extending outward to engage the walls of the vial to form a fluid tight seal with the vial during use. The distal end of the piston has a piston flange extending outwardly and located adjacent a recess in the piston so the cup forms a snap fit over the piston flange and extends into the recess. The piston flange causes the cup to bulge sufficiently outward to form a fluid tight seal with the vial during use. A filter is placed in the bottom of the cup and abuts an inwardly extending lip on the cup. The filter is held against the lip by a piston support at the distal end of the piston. A cup support at a distal end of the cup also helps support the filter.

US Patent:

20130327700, Dec 12, 2013

Filed:

Jan 28, 2013

Appl. No.:

13/751925

Inventors:

Samuel A. Ellis - Oceanside CA, US
Kishan G. Hingorani - Irvine CA, US

Assignee:

SCIENTIFIC PLASTIC PRODUCTS, INC. - Oceanside CA

International Classification:

B01D 33/01
B23P 11/02
B01D 33/00

US Classification:

2104161, 264241, 29428, 29505

Abstract:

A filter vial and piston are provided where the vial has a cylindrical wall with a closed bottom and open top and with the hollow, tubular piston therein. The piston has a distal end covered by a cup having a proximal cup seal extending outward to engage the walls of the vial to form a fluid tight seal with the vial during use. The distal end of the piston has a piston flange extending outwardly and located adjacent a recess in the piston so the cup forms a snap fit over the piston flange and extends into the recess. The piston flange causes the cup to bulge sufficiently outward to form a fluid tight seal with the vial during use. A filter is placed in the bottom of the cup and abuts an inwardly extending lip on the cup. The filter is held against the lip by a piston support at the distal end of the piston. A cup support at a distal end of the cup also helps support the filter.

US Patent:

20140023567, Jan 23, 2014

Filed:

Sep 23, 2013

Appl. No.:

14/034348

Inventors:

Samuel A. Ellis - Oceanside CA, US
Kishan G. Hingorani - Oceanside CA, US

Assignee:

SCIENTIFIC PLASTIC PRODUCTS, INC. - Oceanside CA

International Classification:

B01D 33/01

US Classification:

422534

Abstract:

A filter vial for separating biological and chemical fluids has a cylindrical sidewall with an open top and a closed bottom. A protrusion extends upwards from the middle of the bottom to form an annular recess. A tubular plunger has an open bottom end to which is fastened an annular cup having an outer sidewall sized to fit into and seal against the vial's sidewall. An inner sidewall of the annular cup holds a filter over an opening in the bottom of the plunger and forms a shaped cavity leading to that filter. The annular cup on the plunger fits into the annular recess in the vial to force fluid from the vial through the filter and into the plunger.