IP Library › Granted Patent US 1,141,067
Granted Patent S1
US 1,141,067 · App. 30/019,656 · Granted Aug 11, 2026

Concealed fire protection sprinkler cap

Inventors: Martin H. Workman (Delton, MI); Jed E. Pipe (Byron Center, MI)
Assignee: Minimax Viking Patent Management GmbH
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Quick Facts
Patent No.
US 1,141,067
App. No.
30/019,656
Granted
Aug 11, 2026
Kind
S1
Claims (1)

The ornamental design for a concealed fire protection sprinkler cap, as shown and described.

Assignments (4)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2026
From: WORKMAN, MARTIN H.
To: VIKING GROUP, INC.
Reel/Frame 074834/0542 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2026
From: VIKING GROUP, INC.
To: MINIMAX VIKING PATENT MANAGEMENT GMBH
Reel/Frame 074834/0641 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2026
From: PIPE, JED E.
To: THE VIKING CORPORATION
Reel/Frame 074834/0958 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 3, 2026
From: THE VIKING CORPORATION
To: MINIMAX VIKING PATENT MANAGEMENT GMBH
Reel/Frame 074835/0062 →
References Cited (15)
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Viking Product Spotlight VK4621, Nov. 16, 2023, YouTube, site visited Mar. 20, 2026: https://www.youtube.com/watch?v=D3b94wBUIIw (Year: 2023). [cited by examiner]
Home Fire Sprinklers, Feb. 14, 2017, YouTube, site visited Mar. 20, 2026: https://www.youtube.com/watch?v=ma8H3hFqyZk (Year: 2017). [cited by examiner]