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Patent Assignment Assignor Details
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Assignor Name : HELGELAND, WALTER
Total Assignments: 8
Assignment: 1
Reel/Frame:003917/0472   Pages: 2
Recorded: 08/07/1981
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignors
1
HELGELAND, WALTER
Exec Dt:
05/28/1981
2
TEVEROVSKY, ALEX
Exec Dt:
05/28/1981
3
KERWIN, KENNETH H. II
Exec Dt:
05/28/1981
4
CHARTIER, CARL P.
Exec Dt:
05/28/1981
Assignee
1
FERROFLUIDICS CORPORATION
40 SIMON ST.
A CORP. OF MASS
NASHUA, NEW HAMPSHIRE 03061
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4350560
NONE
06298242
Correspondence name and address
RICHARD P. CRAWLEY
WIANNO PLACE, 901 MAIN ST.
OSTERVILLE, MA 02655
Assignment: 2
Reel/Frame:004380/0881   Pages: 1
Recorded: 03/06/1985
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST.
Assignor
1
HELGELAND, WALTER
Exec Dt:
03/04/1985
Assignee
1
FERROFLUIDICS CORPORATION
40 SIMON STREET, A CORP OF MASS
NASHUA, NEW HAMPSHIRE 03061
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
4663128
NONE
06709056
Correspondence name and address
RICHARD P. CROWLEY
WIANNO PLACE
901 MAIN STREET
OSTERVILLE, MA 02655
Assignment: 3
Reel/Frame:008244/0158   Pages: 3
Recorded: 11/26/1996
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
HELGELAND, WALTER
Exec Dt:
11/20/1996
Assignee
1
RIGAKU/USA, INC.
STE. 190
199 ROSEWOOD DRIVE
DANVERS, MASSACHUSETTS 01923
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
5826885
NONE
08720634
Correspondence name and address
HAMILTON, BROOK, SMITH & REYNOLDS, P.C.
LEO R. REYNOLDS, ESQ.
TWO MILITIA DRIVE
LEXINGTON, MA 02173
Assignment: 4
Reel/Frame:009759/0502   Pages: 4
Recorded: 02/16/1999
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MAHONEY, DAVID G.
Exec Dt:
12/22/1998
2
HELGELAND, WALTER
Exec Dt:
01/20/1999
Assignee
1
RIGAKU/USA, INC.
SUITE 190, NORTHWOOODS BUSINESS PARK
199 ROSEWOOD DRIVE
DANVERS, MASSACHUSETTS 01923
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
6199867
NONE
09185432
Correspondence name and address
HAMILTON, BROOK, SMITH ET AL.
LEO R. REYNOLDS
TWO MILITIA DRIVE
LEXINGTON, MA 02421-4799
Assignment: 5
Reel/Frame:030132/0872   Pages: 3
Recorded: 04/02/2013
Attorney Dkt #:10544-414
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MAHONEY, DAVID G.
Exec Dt:
01/19/2009
2
HELGELAND, WALTER
Exec Dt:
10/24/2008
Assignee
1
RIGAKU INNOVATIVE TECHNOLOGIES, INC.
1900 TAYLOR ROAD
AUBURN HILLS, MICHIGAN 48326
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8430409
US20090127794
12252829
Correspondence name and address
BRINKS HOFER GILSON & LIONE
524 S. MAIN STREET
SUITE 200
ANN ARBOR, MI 48104
Assignment: 6
Reel/Frame:053684/0087   Pages: 3
Recorded: 09/03/2020
Attorney Dkt #:100378-2
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MAHONEY, DAVID G
Exec Dt:
01/19/2009
2
HELGELAND, WALTER
Exec Dt:
10/24/2008
Assignee
1
RIGAKU INNOVATIVE TECHNOLOGIES, INC.
1900 TAYLOR ROAD
AUBURN HILLS, MICHIGAN 48326
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
9163732
US20140291935
13855295
 
9816617
US20150300501
14674920
Correspondence name and address
NUTTER MCCLENNEN & FISH LLP
155 SEAPORT BLVD.
SEAPORT WEST
BOSTON, MA 02210
Assignment: 7
Reel/Frame:023020/0562   Pages: 2
Recorded: 07/29/2009
Attorney Dkt #:10544-477
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignor
1
HELGELAND, WALTER
Exec Dt:
07/22/2009
Assignee
1
RIGAKU INNOVATIVE TECHNOLOGIES, INC.
1900 TAYLOR ROAD
AUBURN HILLS, MICHIGAN 48326
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8720900
US20100025935
12510367
Correspondence name and address
BRINKS HOFER GILSON & LIONE
P.O. BOX 10395
CHICAGO, IL 60610
Assignment: 8
Reel/Frame:023577/0661   Pages: 3
Recorded: 11/30/2009
Attorney Dkt #:10544-486
Conveyance: ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
MAHONEY, DAVID G.
Exec Dt:
10/19/2009
2
HELGELAND, WALTER
Exec Dt:
10/17/2009
Assignee
1
RIGAKU INNOVATIVE TECHNOLOGIES
1900 TAYLOR ROAD
AUBURN HILLS, MICHIGAN 48326
Property
 
Pat #
Pub #
Intl #
App #
 
 
 
 
 
 
 
 
 
 
 
8382118
US20100090413
12575933
Correspondence name and address
BRINKS HOFER GILSON & LIONE
P.O. BOX 10395
CHICAGO, IL 60610

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