Patents:
- Parallel Back Pressure Hydraulic Control Valve, (PBPHCV). (8 October 2000))
- Anti-earthquake safety bed with collapsing ceiling, safety shade and brake. (8 April 2004)
- Lifter for moving heavy loads upstairs with equilibrator spring and damper.(20 December 2005)
- Quick disassembly and reassembly Anti-earthquake safety bed with an enforcing mechanism for horizontal collapsing of the ceiling, automatic safety shade drop mechanism and ceiling stop locker.(20 December 2005)
- Mechanical leakage measuring and recording device for hydraulic actuators on dirty areas (15 April 2007)
- Foldable spider Anti-earthquake safety bed (2009)
- Foldable earthquake bed safe against debris and fall (2011)
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