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Patent Assignment Assignor Details
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Assignor Name : MITCHELL, DAVID B.
Total Assignments: 10
Assignment: 1
Reel/Frame:005139/0476   Pages: 1
Recorded: 09/14/1989
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
MITCHELL, DAVID B.
Exec Dt:
08/17/1988
Assignee
1
W. R. GRACE & CO.-CONN.
1114 AVENUE OF THE AMERICAS
A CORP. OF CT
NEW YORK, NEW YORK NY
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4913825
NONE
07199508
Correspondence name and address
W. R. GRACE & CO.
PATENT DEPARTMENT
7379 ROUTE 32
COLUMBIA, MD 21044
Assignment: 2
Reel/Frame:005139/0474   Pages: 1
Recorded: 09/14/1989
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
MITCHELL, DAVID B.
Exec Dt:
09/09/1988
Assignee
1
W. R. GRACE & CO.-CONN.
1114 AVENUE OF THE AMERICAS
A CORP. OF CT
NEW YORK, NEW YORK 10036
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4948513
NONE
07199984
Correspondence name and address
W.R. GRACE & CO.
PATENT DEPARTMENT
7379 ROUTE 32
COLUMBIA, MD 21044
Assignment: 3
Reel/Frame:005139/0477   Pages: 2
Recorded: 09/14/1989
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
MITCHELL, DAVID B.
Exec Dt:
09/14/1988
2
CURRAN, THOMAS P.
Exec Dt:
09/14/1988
Assignee
1
W. R. GRACE & CO.-CONN.
1114 AVENUE OF THE AMERICAS
A CORP. OF CT
NEW YORK, NEW YORK 10036
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4904393
NONE
07199969
Correspondence name and address
W. R. GRACE & CO.
PATENT DEPARTMENT
7379 ROUTE 32
COLUMBIA, MD 21044
Assignment: 4
Reel/Frame:006823/0480   Pages: 3
Recorded: 01/10/1994
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MITCHELL, DAVID B.
Exec Dt:
06/04/1990
2
CURRAN, THOMAS P.
Exec Dt:
06/04/1990
3
TAI, WUN T.
Exec Dt:
06/04/1990
4
ENGSTROM, GARY C.
Exec Dt:
06/04/1990
Assignee
1
W. R. GRACE & CO.-CONN.
1114 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5298186
NONE
07944136
Correspondence name and address
JAMES P. BARR
PATENT DEPT.
W.R. GRACE & CO.-CONN.
7379 ROUTE 32
COLUMBIA, MD 21044
Assignment: 5
Reel/Frame:006604/0202   Pages: 4
Recorded: 07/06/1993
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MITCHELL, DAVID B.
Exec Dt:
03/06/1992
2
CURRAN, THOMAS P.
Exec Dt:
03/06/1992
Assignee
1
W. R. GRACE & CO.-CONN.
1114 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5248440
NONE
07828257
Correspondence name and address
JAMES P. BARR
PATENT DEPT.
W. R. GRACE & CO.-CONN.
7379 ROUTE 32
COLUMBIA, MD 21044
Assignment: 6
Reel/Frame:008068/0616   Pages: 3
Recorded: 08/05/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MITCHELL, DAVID B.
Exec Dt:
07/31/1995
2
CURRAN, THOMAS P.
Exec Dt:
07/31/1995
3
DEBOO, STEVEN M.
Exec Dt:
07/31/1995
4
ENGSTROM, GARY G.
Exec Dt:
07/31/1995
5
RYE, LARRY M.
Exec Dt:
08/02/1995
6
RICHARDSON, JOHN
Exec Dt:
08/24/1995
Assignee
1
W. R. GRACE & CO.-CONN.
1114 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5633224
NONE
08465175
Correspondence name and address
BETZDEARBORN INC.
LEGAL DEPARTMENT
4636 SOMERTON ROAD
TREVOSE, PA 19053-6783
Assignment: 7
Reel/Frame:008068/0592   Pages: 4
Recorded: 08/05/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MITCHELL, DAVID B.
Exec Dt:
08/31/1995
2
MINNIS, RALPH L.
Exec Dt:
08/31/1995
3
CURRAN, THOMAS P.
Exec Dt:
08/31/1995
4
DEBOO, STEVEN M.
Exec Dt:
09/01/1995
5
KELLY, JOHN A.
Exec Dt:
08/31/1995
6
PATWARDHAN, RASHMI
Exec Dt:
08/31/1995
7
TAI, WUN TEN
Exec Dt:
08/30/1995
Assignee
1
W.R. GRACE & CO.-CONN.
1114 AVENUE OF THE AMERICAS
NEW YORK, NEW YORK 10036
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5830315
NONE
08499098
Correspondence name and address
BETZDEARBORN INC.
LEGAL DEPARTMENT
4636 SOMERTON ROAD
TREVOSE, PA 19053-6783
Assignment: 8
Reel/Frame:008982/0315   Pages: 4
Recorded: 02/23/1998
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MITCHELL, DAVID B.
Exec Dt:
10/22/1997
2
MINNIS, RALPH L.
Exec Dt:
09/22/1997
3
WAYMAN, GENE V.
Exec Dt:
09/12/1997
4
DEBOO, STEVEN M.
Exec Dt:
10/03/1997
5
DESCHRYVER, MARK J.
Exec Dt:
10/15/1997
Assignee
1
BETZDEARBORN INC.
4636 SOMERTON ROAD
TREVOSE, PENNSYLVANIA 19053
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5904158
NONE
08954949
Correspondence name and address
BETZDEARBORN INC.
DEBORAH R. SEGELITZ
LEGAL DEPARTMENT
4636 SOMERTON ROAD
TREVOSE, PA 19053-6783
Assignment: 9
Reel/Frame:024825/0776   Pages: 5
Recorded: 08/11/2010
Attorney Dkt #:00163.2719US01
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MITCHELL, DAVID B.
Exec Dt:
07/09/2010
2
WAGNER, DANIEL J.
Exec Dt:
07/27/2010
3
ARTHUR-MENSAH, KOJO
Exec Dt:
07/27/2010
Assignee
1
ECOLAB USA INC.
370 NORTH WABASHA STREET
ECOLAB CENTER
ST. PAUL, MINNESOTA 55102
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8435409
US20110290722
12790326
Correspondence name and address
MERCHANT & GOULD ECOLAB
P.O. BOX 2903
MINNEAPOLIS, MN 55402
Assignment: 10
Reel/Frame:056016/0968   Pages: 4
Recorded: 04/23/2021
Attorney Dkt #:00163.3173USU1
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MITCHELL, DAVID B.
Exec Dt:
07/28/2016
2
TONTCHEVA, PETIA TODOROVA
Exec Dt:
02/22/2016
Assignee
1
ECOLAB USA INC.
370 NORTH WABASHA STREET
ST. PAUL, MINNESOTA 55102
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
11407668
NONE
15427574
Correspondence name and address
MERCHANT & GOULD
PO BOX 2903
MINNEAPOLIS, MN 55402

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