US Patent No: 6,666,564

Number of patents in Portfolio can not be more than 2000

LED pen clip




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A light emitting diode (LED) pen clip is mainly assembled by an upper pen stem, a lower pen stem and a joint portion; an accommodation space inside the upper pen stem is disposed with a LED mechanism which includes a circuit board, a press key switch, a spring, one or more than one batteries and a plurality of LEDs; wherein the batteries transmit the electric power to the circuit board via the spring; the LEDs are respectively disposed on the circuit board. Pressing and switching the press key switch changes the colors of the LEDs. The present invention includes a pen clip connected to a lateral side of the pen stem. The pen clip has a plurality of holes disposed at the upper rim end for inserting the LEDs.

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Patent Owner(s)

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International Classification(s)


Inventor Name Address # of filed Patents Total Citations
Su, Chih-Tsung P.O. Box No. 6-57, Chong-Ho, Taipei 235, TW 8 8

Cited Art Landscape

Patent Info (Count) # Cites Year
Other [Check patent profile for assignment information] (5)
* 4,799,132 Means for mounting a mini-flashlight on a writing instrument 13 1988
* 4,812,068 Writing device with alarm 11 1988
* 5,050,053 Flashlight of selectable colors 13 1990
* 5,405,207 Voice pen for generating audible messages 12 1993
* 6,027,223 Writing instrument pocket clip light 7 1999
* 6,238,119 Photo-pen with the function of displaying a phone calling and illumination in dark 13 2000
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
D545896 Pen with digital audio component 15 2005
* 6,905,352 USB mobile disk-pen 9 2003
* 6,773,192 Light-emitting USB mobile disk-pen 52 2003
* Cited By Examiner

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