IP Library › Assignment 073691/0409
Patent Assignment
Reel/Frame 073691/0409

Security Interest

Recorded: 2026-02-04 Pages: 5
Assignor
PRECISION ICEBLAST CORPORATION
Executed: 2026-01-30
Assignee
HRST, INC.
5909 BAKER ROAD, SUITE 500, MINNETONKA, MINNESOTA, 55345
Covered Properties (2)
Boiler Cleaning Apparatus and Method
Patent: 8,002,902 →
Application: 12/153,258 →
Publication: US 2009/0282631
Tube Spreading Device and Boiler Cleaning System
Application: 14/921,417 →
Publication: US 2016/0116158
Related Assignments (3)
Other recorded transfers of the patents in this record — the chain of ownership.
Assignment of Assignor's Interest Aug 22, 2011
From: KROWECH, ROBERT JAMES
To: HRST, INC.
Reel/Frame 026783/0819 →
Assignment of Assignor's Interest Dec 1, 2015
From: KROWECH, ROBERT JAMES; OLSON, SCOTT DANIEL
To: HRST, INC.
Reel/Frame 037178/0736 →
Assignment of Assignor's Interest Feb 4, 2026
From: HRST, INC.
To: PRECISION ICEBLAST CORPORATION
Reel/Frame 073682/0182 →