Leather - Wikipedia, the free encyclopedia
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Leather is a material created through the tanning of hides and skins of animals, primarily cattlehide. The tanning process converts the putrescible skin into a durable, long-lasting and versatile nat...
en.wikipedia.org/wiki/Leather
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It was for this kind of shoe that patent leather first became popular. The process for making patent leather was invented in 1799 by an Englishman, Edmund Prior. Prior patented a process for painting leather with dyes and boiled oil, and finishing it with an oil varnish.
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www.madehow.com/Volume-6/Patent-Leather.html
www.madehow.com/Volume-6/Patent-Leather.html
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Patent leather begins as a superior grade of fine grain leather that undergoes a process to achieve the glossy look. Originally, this was accomplished by applying layers of a linseed oil finish to the leather, gradually creating the sleek appearance.
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www.leathernet.com/patent-leather.htm
www.leathernet.com/patent-leather.htm
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Patent Abstract: The present invention is directed to a process for the production of high-gloss patent leather from two-component polyurethane compositions by reacting hydroxyl group-containing oligourethanes with polyisocyanates, characterized in tha ... Too bad for IBM. Carlson's invention was the xerography process,
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www.patentstorm.us/patents/5151329.html
www.patentstorm.us/patents/5151329.html
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US Patent Issued on May 28, 2002; Estimated Patent Expiration Date: April 28, 2020Estimated Expiration Date is calculated based on simple USPTO term provisions. ... The present invention relates to methods for the production of leather, and more particularly to a process for producing leather from wet blue pig skins.
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www.patentstorm.us/patents/6395040-description.html
www.patentstorm.us/patents/6395040-description.html
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A process for manufacturing regenerated leather characterized by preparing a short-fiber and a long-fiber leather pulps from wasted natural leather; sending the two kinds of pulps separately to a refrigerator for freezing and then drying in ... US Patent References:; Method of making a composite sole leather and product;
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www.freepatentsonline.com/4325236.html
www.freepatentsonline.com/4325236.html
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The present invention relates to a novel leather making process whereby the post-tanning wet operations are done prior to tanning stage itself to make leather in eco-friendly manner in substantially shorter duration. ... The present example was disclosed in Indian Patent Application No. Del/770/2000,
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www.freepatentsonline.com/7033402.html
www.freepatentsonline.com/7033402.html
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At column 3, lines 21-22 of the patent thereappears the broad disclosure, ... It has been unexpectedly and surprisingly discovered that, under carefully controlled pH conditions in the various stages of the tanning process, leather stock can be subjected to a multiple-stage tanning process wherein the leather stock isfirst tanned,
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www.patentgenius.com/patent/4314802.html
www.patentgenius.com/patent/4314802.html
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Patent leather begins life as a superior grade of fine grain leather that undergoes a process to achieve the glossy look that is considered sophisticated. Originally, this was accomplished by applying layers of a linseed oil finish to the leather, gradually creating the sleek appearance.
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www.wisegeek.com/what-is-patent-leather.htm
www.wisegeek.com/what-is-patent-leather.htm
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