Given a passage and a query based on the passage, generate an unambiguous, concise and simple answer to the query from information in the passage. Note that the answer may not be present in exact form.

Q: Hiring a patent lawyer is a good idea if you plan to go all the way and file a non-provisional patent application. However, professional legal advice isn't necessary at this early stage. You can do the research and fill out the application yourself. Get PROFESSIONAL. 1 Patent Pending Status for 12 Months. 2 Professional Technical Descriptions. See Description Samples. 3 Professional Patent Drawings. See Drawing Samples. 4 Phone call with an engineer to discuss details. A provisional application for patent lasts 12 months from its filing date. The USPTO will not grant extensions for any reason. The inventor(s) must file a Non-Provisional Patent Application within that period to take advantage of the Provisional Application for Patent's filing date. How long a patent lasts depends on when the application was filed with the U.S. Patent and Trademark Office. Patents Filed Through June 17, 1995. For U.S. patents filed through June 17, 1995, the patent lasts for 17 years from the date the patent is issued, provided that the fees necessary to keep the patent in force (maintenance fees) are paid. Patents Filed After June 17, 1995 For patent applications filed after June 17, 1995, the patent last 20 years from the date of filing. If a non-provisional application is not expected to be filed within one year, and the patent is not otherwise barred by law, another provisional application may also be filed at any time and start another one-year period (but this does not work in all cases). You asked how to write a good provisional patent application so I will assume you know the drawbacks as well as the positives of a provisional patent application compared to a non-provisional. So it is best to think of the provisional patent application as a lower cost way of starting your journey toward receiving a patent, but it is incorrect to think of the provisional patent application as a cheap way to start the patent process. If you have filed more than 4 non-provisional patent apps in the past, or have an annual income of greater than $177,117, you may be classified as small entity or large entity which requires $140 or $280 govt fee If you have filed a Provisional Application for Patent relating to the same invention, and your Non-Provisional Utility Patent Application is filed within 12 months of your Provisional Application, your filing date will be the filing date of your Provisional Application. A patent is a governmental grant of a short-term monopoly to inventors. U.S. patent laws enable a patent holder to prevent others from making, using or selling the patented invention for a specific time period. How long a patent remains valid depends on the type of patent and other factors. A patent is a governmental grant of a short-term monopoly to inventors. U.S. patent laws enable a patent holder to prevent others from making, using or selling the patented invention for a specific time period. Query: how long is a provisional patent good for

A: A provisional application for patent lasts 12 months from its filing date.
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Q: A heart attack can happen to anyone, woman or man, young or old. Some people are more at risk because of certain health problems, family health history, age, and habits. These are called risk factors. You can't change some risk factors, like your age, race or ethnicity, or family history. A Month Before a Heart Attack, Your Body Will Warn You With These 8 Signals! - Duration: 6:24. 7ReMix Healthy Tips TV 189,400 views A heart attack occurs when one or more of your coronary arteries become blocked. Over time, a coronary artery can narrow from the buildup of various substances, including cholesterol (atherosclerosis). This condition, known as coronary artery disease, causes most heart attacks. Although a heart attack is a frightening event, if you learn the signs of a heart attack and what steps to take, you can save a lifeperhaps even your own. Many people think that heart attacks are a "man's problem," yet heart disease is actually the number one killer of both men and women in the United States. To diagnose a heart attack, an emergency care team will ask you about your symptoms and begin to evaluate you. The diagnosis of the heart attack is based on your symptoms and test results. The goal of treatment is to treat you quickly and limit heart muscle damage. Tests to Diagnose a Heart Attack. ECG . Symptoms of a heart attack may be immediate and intense. More often, though, symptoms start slowly and persist for hours, days or weeks before a heart attack. Unlike with sudden cardiac arrest, the heart usually does not stop beating during a heart attack. The heart attack symptoms in women can be different than men. What is cardiac arrest? About every 40 seconds, someone in the United States has a myocardial infarction (heart attack). Your heart muscle needs oxygen to survive. A heart attack occurs when the blood flow that brings oxygen to the heart muscle is severely reduced or cut off completely (View an animation of blood flow). Several studies have demonstrated that there is seasonal variation in heart attacks. They are most likely to occur in the winter, and least likely to occur in the summer. This is not just true for heart attacks, but also other cardiovascular events. Several explanations have been proposed. Heart attacks may seem like a senior citizen phenomenon, considering that about 82% of people who die of coronary heart disease are at least 65, according to the American Heart Association. But sudden heart problems can occur much earlier in life, too. Every 40 seconds, someone in the United States has a heart attack. 1. A heart attack, also called a myocardial infarction, occurs when a part of the heart muscle doesn't receive enough blood flow. The more time that passes without treatment to restore blood flow, the greater the damage to the heart muscle. Query: how does a heart attack occur

A: A heart attack occurs when one or more of your coronary arteries become blocked.
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Q: Phosphoric acid: Phosphoric acid, (H3PO4), the most important oxygen acid of phosphorus, used to make phosphate salts for fertilizers. It is also used in dental cements, in the preparation of Cola drinks contain a lot of phosphate - so much, in fact, that they can cause too much phosphate in the blood. People use phosphate salts for medicine. Be careful not to confuse phosphate salts with substances such as organophosphates, or with tribasic sodium phosphates and tribasic potassium phosphates, which are very poisonous. This acid is too strong to be used on plants and must be combined with other chemicals to raise the pH of the solution and decrease the potential for plant injury. One means of reducing the acidity of phosphonic acid is to neutralize it with an alkali salt; typically potassium hydroxide (KOH). Assorted References. 1 major reference (in oxyacid: Orthophosphoric acid and phosphate salts) 2 chemical industry (in chemical industry: Phosphorus) 3 nomenclature of acids (in chemical compound: Acids) 4 organosulfur compounds (in organosulfur compound: Preparation) 5 oxyacids (in oxyacid) Phosphonate compounds also occur naturally in some lower life forms, including protozoa, mollusks, coelenterates, and oomycete fungi (6). For this article, we use the term phosphonate to describe only those products made up of the salts and esters of phosphorous acid (HPO(OH) 2 ). Phosphorous acid is a solid substance that can be purchased through chemical supply companies. When mixed with water, it forms a strong acid called phosphonic acid. Among the important phosphate salts are: sodium dihydrogen phosphate (NaH 2 PO 4), used for control of hydrogen ion concentration (acidity) of solutions; disodium hydrogen phosphate (Na 2 HPO 4), used in water treatment as a precipitant for highly charged metal cations; trisodium phosphate (Na 3 PO 4), used in soaps and detergents; calcium dihydrogen phosphate or calcium superphosphate (Ca[H 2 PO 4] 2), a major fertilizer ingredient; calcium monohydrogen phosphate (CaHPO 4), used as a ... Phosphate salts are also used for improving exercise performance, as an antacid for gastroesophageal reflux disease , and as a laxative for emptying the bowels before surgery. Phosphate salts and calcium are applied to sensitive teeth to reduce pain. Rectally, phosphate salts are used as a laxative to clean the bowels before surgery or intestinal tests. Healthcare providers sometimes give potassium phosphate intravenously (by IV) for treating low phosphate and high calcium levels in the blood, and for preventing low phosphate in patients who are being tube-fed. Phosphoric acid, also called orthophosphoric acid, (H 3 PO 4), the most important oxygen acid of phosphorus, used to make phosphate salts for fertilizers. It is also used in dental cements, in the preparation of albumin derivatives, and in the sugar and textile industries. It serves as an acidic, fruitlike flavouring in food products. 1 Pure phosphoric acid is a crystalline solid (melting point 42.35 C, or 108.2 F); in less concentrated form it is a colourless syrupy liquid. 2 Phosphoric acid forms three classes of salts corresponding to replacement of one, two, or three hydrogen atoms. Written By: Phosphoric acid, also called orthophosphoric acid, (H3PO4), the most important oxygen acid of phosphorus, used to make phosphate salts for fertilizers. It is also used in dental cements, in the preparation of albumin derivatives, and in the sugar and textile industries. It serves as an acidic, fruitlike flavouring in food products. 1 Pure phosphoric acid is a crystalline solid (melting point 42.35 C, or 108.2 F); in less concentrated form it is a colourless syrupy liquid. The crude acid is prepared from phosphate rock, while acid of higher purity is made from white phosphorus. Query: how is phosphate salts used

A:
Phosphate salts are also used for improving exercise performance, as an antacid for gastroesophageal reflux disease , and as a laxative for emptying the bowels before surgery. Phosphate salts are used as a laxative to clean the bowels before surgery or intestinal tests.
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