Artificial hair for hair implantation and method of preparation
US4834119A · kind A · utility
6Cited by
3References
6Claims
0Family size
Inventor
Key dates
| Filing date | Nov 3, 1987 |
| Grant date | May 30, 1989 |
| Priority date | — |
| Expiry date | Nov 3, 2007 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB29C66/9513
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An artifical hair for implantation comprising a loop and a hair root portion is prepared by forming a loop by winding a synthetic resin monofilament around a bar shaped jig, forming an S-twisted part by twining a first end of the monofilament around the second end of the monofilament and twisting the configuration once to form an S shape at the foot at the loop, and fusion bonding the S-twisted part of the monofilament only at a region between two points where both filaments intersect each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.