|Founder(s)||Yoshihiro Hirata, Ayako Doue|
|Key people||Yoshihiro Hirata (president)|
|Products||Medical devices, cosmetics, hair-care products, sports-related items, health food, "quasi-drugs," and other health-related products|
|Total equity||¥30,000,000 (as of May 2009)|
|Subsidiaries||Affiliates in USA, Korea, China, Germany, and the UK|
PHITEN Co., Ltd is a Japanese company producing cosmetics, hair-care products, sports-related items, health food, "quasi-drugs," and other health-related products. The name "Phi-Ten" comes from the Greek letter "Phi" Φ, and the exponent 10.
Some Major League Baseball players wear the company's nylon-coated necklaces, although it is not known whether it is for "physiological benefits, superstition or a combination of both.". Many view the products as mere superstition and ritual.
The company was founded in October 1983 by Yoshihiro Hirata and Ayako Doue in Japan, with international headquarters in Kyoto. After an illness curtailed his training as a chef, Hirata studied physical therapy and rehabilitation methods on his own. At the age of 29 he started a physical therapy center, and later developed titanium-infused tape.
One source noted in October 2005 that "over 200 Major Leaguers" were wearing titanium-filled nylon necklaces, but remarked that the reason may be "physiological benefits, superstition or a combination of both". The view of the product as a "good luck charm" has been expressed by other players more recently 
In 2007, Phiten acquired a license for an MLB Authentic Collection.
Through what the company calls the "Phild process", titanium is supposedly turned into "aqua-titanium". The company claims to be able to integrate small amounts of this metal directly into fabric.
- "Company information". phiten.com/english. May 2009. Retrieved 2012-10-12.
- About Us from Phiten-Canada
- Phiten Official Store[not in citation given]
- Petraglia, Mike (October 25, 2005). "Players take to unique necklace". MLB.com. Retrieved 2012-10-12.
- Hudson, William (October 26, 2011). "What's the power of a good luck charm?". CNN.
- Harris, Craig (January 1, 2008). "Hasselbeck among athletes wearing titanium necklace". Seattle Post-Intelligencer.
- Phiten: How it works, phitennz.com
||This article includes a list of references, but its sources remain unclear because it has insufficient inline citations. (October 2012)|
- So what's with all these necklaces in baseball? from Yahoo! Sports
- Do those Phiten titanium necklaces actually enhance athletic ability and promote healing?, Scienceline, NYU Journalism