| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Japan | 44 | |
| #2 | United States | 3 | |
| #3 | Hong Kong | 2 | |
| #4 | Singapore | 2 | |
| #5 | Germany | 1 | |
| #6 | France | 1 | |
| #7 | United Kingdom | 1 | |
| #8 | Italy | 1 | |
| #9 | Republic of Korea | 1 | |
| #10 | Malaysia | 1 | |
| #11 | Philippines | 1 |
| # | Industry | |
|---|---|---|
| #1 | Civil engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Indexing scheme relating to hinges | |
| #2 | Wing fittings | |
| #3 | Unspecified technologies | |
| #4 | Hinges for doors or windows | |
| #5 | Doors and windows |
| # | Name | Total Patents |
|---|---|---|
| #1 | Demukai Enzo | 32 |
| #2 | Demukai Yasushi | 12 |
| #3 | Demukai Enzou | 9 |
| #4 | Monobe Haruto | 2 |
| #5 | Enzo Demukai | 1 |
| #6 | Temukai Enjo | 1 |
| Publication | Filing date | Title |
|---|---|---|
| JP2020084693A | Dust cover structure for sliding door | |
| JP2019065611A | Door closer | |
| JP2017227050A | Door Closer | |
| JP2017218785A | Door Closer | |
| JP2016108912A | Door closer | |
| JP2016061028A | Door closer | |
| JP2014020160A | Sliding door apparatus and sliding door structure | |
| JP2012012845A | Door closer | |
| JP2011246984A | Pivot hinge | |
| JP2011224177A | Heat sensor for fire door | |
| JP2010270510A | Floor hinge | |
| JP2010101074A | Floor hinge | |
| JPH094306A | Opened state retainer of revolving door | |
| JPH08303099A | Door hinge device | |
| JPH08303107A | Automatic closing device for sliding door | |
| JPH08303098A | Supporting device for door | |
| JPH07269220A | Absorbing method of expansion of oil at time of baking finish of door closure | |
| JPH08158734A | Door closer | |
| JPH08158725A | Door latch device | |
| JPH0893314A | Floor hinge |