[Today's hot spot] Chinese companies are expected to break the LED core patent barrier

April 26th is World Copyright Day, and on April 22nd, US time, in the patent case of Yiguang and Nichia, the federal jury of Michigan said that the federal jury agreed that Nichia has The two LED patents are invalid, respectively, U.S. Patent No. 5,998,925 (hereinafter referred to as the 925 patent) and U.S. Patent No. 7,531,960 (hereinafter referred to as the 960 patent). The patents of the two major LED packaging factories, Ziyahua and Yiguang, have been entangled for a long time, and their patent litigation has also been hit from Japan to Germany and the United States. The federal jury pointed out that although Nichia was obviously invalid on the 925 and 960 patents, in the 925 patent, Yiguang did not propose an implementation permit to prove that Nichia was invalid in this patent. In the case of the 960 patent, Yiguang did have successfully submitted information to prove that the patent was ineffective. Although at this stage it is only the opinion of the federal jury that the 927 patent and the 960 of the Japanese are obviously invalid, according to the judicial practice of the United States, the judge's final judgment will not be too different from the jury's point of view. All along, Nichia's 925 and 960 patents belong to the door-level patents. In the past, these two patents made Taiwan LED manufacturers enter the North American market and suffered a lot. If Everlight wins in this battle, it will have a very good chance to break the patent barrier of Nichia in North America. Dr. Zhao Hanmin, Technical Director of Jingneng Optoelectronics (Jiangxi) Co., Ltd. pointed out that LED patent events have been frequent recently, but one thing in common is that most of these events are beneficial to Chinese companies, such as Philips, Osram, Cree and Japanese and Korean companies. The patent giant patent threat is expected to be relatively weak, and Chinese companies are expected to gain a good opportunity to enter the North American market. Recently, China's LED patent industry has been prosperous. Recently, Ruifeng and Jufei also obtained Toyota's white light patent. A little earlier, Jinshajiang Venture Capital acquired Philips Lumileds and inherited more than 600 patents. On April 2nd, Philips Lumileds officially changed its name to Liangrui Trading (Shanghai) Co., Ltd. Jinshajiang Venture Capital Investment Project, including Dalian Gold 3D, Jingneng Optoelectronics, Crystal and Lighting, Yimeixinguang, Shangyu Lighting, A series of LED-related enterprises such as Beijing Taishi Xinguang and Changzhou Carbon Technology have involved multiple links in the LED industry chain. The move to acquire Philips Lumileds is to solve the problem of LED patents of its enterprises and to create Chinese LEDs. Leading enterprise in the industry. The patent is the shortcoming of China's LED companies, especially the upstream core patents, which are firmly controlled by the five giants. Chinese companies want to go abroad, and patent issues bear the brunt. A series of events show that Chinese companies are expected to break international patent barriers and achieve a qualitative breakthrough in the entire industry.

PERSONAL PROTECTION

 It is essential that the operator and helpers be properly clothed and protected because of the heat, ultra-violet rays, and sparks, produced by the arc welder (See Figure 3). For body protection a pair of fire retardant long sleeved coveralls without cuffs is a good choice. Always avoid clothing with tears, snags, rips, or worn spots as these are easily ignited by sparks. The sleeves and collars should be kept buttoned. The hands should be protected with leather gauntlet gloves. A pair o high top leather shoes, preferably safety shoes, is good protection for the feet. If low shoes are worn the ankles should be protected by fire resistant leggings. Eyes should be protected by transparent goggles if the person wears prescription glasses or safety glasses if not. A welding helmet or hand shield with filter plate and cover plate is mandatory for eye protection from the harmful rays of the arc. The filter plate should be at least shade #10 for general welding up to 200 amps. However, certain operations such as carbon-arc welding and higher current welding operations require darker shades. Never use a helmet if the filter plate or cover lens is cracked or broken. A flame-proof skull cap to protect the hair and head as well as hearing protection in noisy situations is recommended.
Plastic disposable cigarette lighters are very dangerous around heat and flame. It is very important that they not be carried in the pockets while welding. Always provide protection to bystanders or other workers by welding inside a properly screened area, if possible. If unable to work inside a screened area then protection to others should be provided by a portable screen or shield, or by their wearing anti-flash goggles.

SAFE OPERATION OF THE WELDER

It is important that anyone operating an arc welder be instructed on its safe use by a qualified teacher or welder.
Because of their potentially explosive nature, we strongly recommend that no welding, cutting, or hot work be attempted on used drums, barrels, tanks, or other containers under any circumstances.

If possible, work to be welded should be placed on a firebrick surface at a comfortable height. Welding should never be done directly on a concrete floor. Heat from the arc can cause steam to build-up in the floor which could cause an explosion. The welder cables should be positioned so that sparks and molten metal will not fall on them. They should also be kept free of grease and oil and located where they will not be driven over.

Electric welders can kill by electric shock. If the welding operation must be done on steel or other conductive material an insulating mat must be used under the operator. If the welding area is wet or damp or the operator is actively perspiring then he/she should wear rubber gloves under the Welding Gloves.

It is easier and safer to establish an arc on a clean surface than a dirty or rusty one. Therefore, metal should always be thoroughly cleaned by wire brushing or other method prior to welding. When chipping slag or wire brushing the finished bead the operator should always be sure to protect his eyes and body from flying slag and chips. Unused electrodes and electrode stubs should not be left on the floor as they create a slipping hazard. Hot metal should be handled with metal tongs or pliers. When quenching hot metal in water it should be done carefully to prevent painful burns from the escaping steam. Any metal left to cool should be carefully marked "HOT" with a soapstone. When welding is finished for the day or suspended for any length of time electrodes should be removed from the holder. The holder should be placed where no accidental contact could occur, and the welder should be disconnected from the power source.

SAFETY PRECAUTIONS FOR ENGINE POWERED WELDERS
Always operate in an open well-ventilated area or vent the engine exhaust directly outdoors.
Never fuel the engine while running or in the presence of an open flame.
Wipe up spilled fuel immediately and wait for fumes to disperse before starting the engine. *Never remove the radiator pressure cap from liquid cooled engines while they are hot to prevent scalding yourself.
Stop the engine before performing any maintenance or trouble shooting. The ignition system should be disabled to prevent accidental start of the engine.
Keep all guards and shields in place.
Keep hands, hair, and clothing away from moving parts.
FIRST AID

The welding area should always be equipped with a fire blanket and a well stocked first aid kit. It is desirable that one person be trained in first aid to treat the minor injuries that may occur. All injuries, no matter how minor they may seem can become more serious if not properly treated by trained medical personnel.
KEY POINTS TO REMEMBER
Be sure the welder is properly installed and grounded.
Never weld without adequate ventilation.
Take proper precautions to prevent fires.
Protect your entire body with fire retardant clothing, shoes, and gloves.
Wear eye protection at all times.
Weld only in a firesafe area.
Never do any welding, cutting, or hot work on used drums, barrels, tanks, or other containers.
Mark metal "HOT" with a soapstone.
Keep a well stocked first aid kit handy.

Welding Protection

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