| Registration date | 17 Ougust, 2001 |
| Registration number | Patent number 3222879 |
| The title of the invention | This invention can keep the number of polygon under control of increasing. And it also can make roundness of shapes in mesh parts. |
| The content of the invention | This invention can keep the number of polygon under control of increasing. And it also can make roundness of shapes in mesh parts. |