Patent Assignment
Reel/Frame 028549/0963
Assignment of Assignor's Interest
Recorded: 2012-07-12
Pages: 4
Assignor
DIERKES, CARSTEN
Executed: 2012-05-24
Assignee
ROYAL CONCRETE PIPE, INC.
30630 FOREST BOULEVARD, P.O. BOX 430, STACY, MINNESOTA, 55079
Covered Properties
(2)
Filter Element for Water Loaded with Solid Particles and Dissolved Toxic Substances and Purification System Equipped with Said Filter Element Test System for Portable Analyzer
Application:
12/027,706 →
Publication:
US 2008/0121594
Liquid Filtration System
Application:
12/570,327 →
Publication:
US 2010/0025313
Related Assignments
(3)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest
Feb 25, 2008
From: DIERKES, CARSTEN
To: ROYAL ENVIRONMENTAL SYSTEMS, INC.
Reel/Frame 020552/0479 →
Assignment of Assignor's Interest
Sep 30, 2009
From: DIERKES, CARSTEN
To: ROYAL ENVIRONMENTAL SYSTEMS, INC.
Reel/Frame 023305/0975 →
Security Interest
Dec 22, 2009
From: ROYAL CONCRETE PIPE, INC.
To: MAKENS, DIANA
Reel/Frame 023699/0689 →