Patent Assignment
Reel/Frame 006059/0832
Change of Name Effective on 08/19/1991
Recorded: 1992-03-31
Pages: 8
Assignor
HT CHEMICALS, INC.
Executed: 1991-08-19
Assignee
Covered Properties
(4)
Zero-Void Column End Plate for Chromatography
Patent:
4,882,047 →
Application:
07/328,781 →
Zero Void Column End Plate for Chromatography
Patent:
5,013,433 →
Application:
07/419,086 →
Slurry Compressor, Apparatus for Guiding Compressor, and Method for Packing Slurry in Column
Application:
07/501,122 →
Column Slurry Packing Compressor
Patent:
5,169,522 →
Application:
07/587,848 →
Related Assignments
(10)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignors Interest.
Sep 11, 1989
From: SHALON, YEHUDA
To: HT CHEMICALS, INC., 4221 FOREST PARK BLVD., ST. LOUIS, MO 63108-2810 A CORP. OF MO
Reel/Frame 005140/0248 →
Assignment of Assignors Interest.
Nov 26, 1990
From: SHALON, YEHUDA; SHALON, TADMOR
To: HT CHEMICALS, INC.
Reel/Frame 005537/0226 →
Assignment of Assignors Interest.
Mar 28, 1991
From: SHALON, YEHUDA
To: HT CHEMICALS INC.
Reel/Frame 005648/0397 →
Change of Name
Apr 22, 2003
From: HT CHEMICALS INC.
To: MODCOL CORPORATION
Reel/Frame 013998/0351 →
Change of Name
Apr 28, 2003
From: HT CHEMICALS, INC.
To: MODCOL CORPORATION
Reel/Frame 013998/0549 →
Change of Name
Apr 28, 2003
From: HT CHEMICALS, INC.
To: MODCOL CORPORATION
Reel/Frame 013998/0598 →
Merger
Aug 4, 2004
From: MODCOL CORPORATION
To: THE SEPARATIONS GROUP
Reel/Frame 014934/0720 →
Merger
Mar 17, 2005
From: THE SEPARATIONS GROUP
To: THE SEPARATIONS GROUP
Reel/Frame 015788/0264 →
Merger
Mar 24, 2005
From: ALLTECH ASSOCIATES INC.
To: ALLTECH ASSOCIATES INC.
Reel/Frame 015810/0776 →
To Correct Assignment
Mar 25, 2005
From: THE SEPARATIONS GROUP
To: ALLTECH ASSOCIATES INC.
Reel/Frame 015819/0353 →