Our original techniques assure of future success.
The patents listed below show the result of our many years' painstaking endeavours and
studies, which we trust will be the bases for our future technical developments.
Industrial properties owned by O.P.G Patents
| No. | Descriptions |
|---|---|
| 637955 | Method to manufacture nuts preassembled with washers |
| 637956 | Manufacturing device of nuts to be assembled with washers |
| 723677 | Manufacturing method of stamped wing nuts |
| 727355 | Manufacturing method of stamped wing bolts |
| 871760 | Manufacturing equipment for wing nuts |
| 897143 | Nut/washer assembling machine |
| 988478 | Continuous production devices of heads of bolts and pins having recessions in the middle |
| 1035833 | Manufacturing method of nylon lock nuts preassembled with washers |
| 1069447 | Vibration-testing device |
| 1269629 | Manufacturing method of cap nuts |
| 1278911 | Manufacturing method of turnbuckles |
| 1326362 | Measuring instrument of fastener's axial force |
| 1390403 | Turnbuckles and their manufacturing equipment |
| 1435091 | Tapping machines of nuts |
| 1599588 | Transfer units by pneumatic control |
Patents for new devices
| No. | Descriptions |
|---|---|
| 888303 | Material feeding machine with uniform space/interval |
| 947961 | Locknuts preassembled with loosening preventing washers |
| 955244 | Loosening-prevention device like plate pendulum |
| 1014007 | Nuts preassembled with washers made of metal sheet |
| 1025775 | Locknuts |
| 1027460 | Assembling device of nuts and washers |
| 1064125 | Wing bolts and wing screws |
| 1064126 | Wing nuts |
| 1093014 | Wing bolts |
| 1185695 | Wing bolts |
| 1301180 | Loosening-prevention device of nuts assembled with washers |
| 1438368 | Wing bolts |
Registration of designs
| No. | Descriptions |
|---|---|
| 330828 | Wing bolt |
| 330829 | Wing nut |
| 341908 | Wing bolt preassembled with washer |
| 341888 | Wing nut preassembled with washer |
| 377397 | Wing nut |
| 377843 | Wing nut |
| 396954 | Wing bolt |
| 510228 | Nut |
| 549736 | Welded nut |
| 581785 | Turnbuckle |
| 581793 | Turnbuckle |
| 610480 | Nut preassembled with washer |
| 610481 | Nut preassembled with washer |
| 613162 | Wing nut |
Copyright (c) 1996-2000 O.P.G Ltd. All rights reserved.