The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 8089213 B1

PDF
Full Text
Expired
Date of Patent:
Jan. 03, 2012

Filed:

Nov. 03, 2009
Applicant:

Myung Koo Park, Seoul, KR;

Inventor:

Myung Koo Park, Seoul, KR;

Assignees:

Other;

Kumho Electric Inc., , KR;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H05B 37/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

Provided is a light-emitting diode (LED) fluorescent lamp using as light sources a plurality of LEDs, which are eco-friendly and can contribute to power conservation. The LED fluorescent lamp includes an LED array including a plurality of LEDs connected in series; first through fourth connection pins; first through fourth capacitors connected to the first through fourth connection pins, respectively; a first diode having an anode connected to a second end of the first capacitor and a cathode connected to a first end of the LED array; a second diode having an anode connected to a second end of the LED array and a cathode connected to a second end of the second capacitor; a third diode having an anode connected to the second end of the LED array and a cathode connected to a second end of the third capacitor; and a fourth diode having an anode connected to a second end of the fourth capacitor and a cathode connected commonly to the first end of the LED array and the cathode of the first diode. The LED fluorescent lamp can be readily used in various types of fluorescent lamp ballasts without a requirement of the installation of additional equipment or the change of wiring.


Find Patent Forward Citations

Park, Myung. (2012). Led fluorescent lamp (U.S. Patent No. 8089213). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8089213

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