Patent history

An important reason for the rapid development of this field is its unique patent history. There are no strategic patents in this fields, but many companies own patents that enable them to pursue unique chemistries thus, new entrants have the peculiar opportunity to gain access to this field with no major limitations. 

Combinatorial chemistry has an unusual patent history. No single company or individual has control of any one strategic patent and there is no single strategic patent that defines the field. Many companies have patents that enable them to pursue unique chemistries, and this provides investors with many choices. On the other side, exclusivity is reduced. 

Johnson, H. B., 1938a. Electrostatic separation. Its development as revealed in forty years of patent history. Eng. Mining . 139 (No. 9) 37. 

The Notice of Errors. The first mechanism for correction of errors is called a "Notice of Errors." This document may be filed by the patentee after issuance of the patent with the U.S. PTO and references the patent number, issue date, and the errors contained in the patent. The purpose of a Notice of Errors is to clarify the examination history of the patent and such notice dispositively corrects any misspellings, or typographical errors or omissions. One example of a problem which may be clarified by a Notice of Errors is an omitted chemical bond in a compound used in an exemplary embodiment of the invention. In short, the error is obvious and easily corrected. 

The Notice of Errors should resolve those problems which are evident on the face of the patent but which also may be, by their nature, obvious and correctable problems to someone reading only the patent. The Notice of Errors does not result in a further pubHcation by the U.S. PTO, but rather it is instead placed into the examination history of the issued patent and thus is available to anyone who may wish to read this examination history. The Notice of Errors is appropriate for correcting simple matters which do not affect the claim scope or the vaHdity of the patent. 

The answer is patently no —not because of any general sceptical-philosophical scruples about induction, but because of the particular fact that the impression of consistent predictive success for Mendeleev s scheme is a complete misrepresentation of history a classic example of an effect (Mendeleev s predictive success ) created by selection-bias. Mendeleev made any number of predictions on the basis of his scheme (or rather schemes—there are at least 65 versions of Mendeleev s table, published and unpublished). Many of these predictions (depending on how exactly they are individuated)—perhaps a majority—were unsuccessful. 

Gelatin was patented in the United States in 1845 by Peter Cooper, founder of New York s Cooper Union, according to the Jell-O history pages at www.kraftfoods.com. A cough syrup manufacturer bought the patent and introduced Jell-O late in the nineteenth century. 

The history of catalytic converters was reviewed recently by Ebel (12). Some of the early patents and publications on catalytic treatment of exhaust gases date from 1925. One of the earliest uses of an oxidation catalyst was in chemical plant exhaust control beginning in 1949, when the main gases to be removed were carbon monoxide and hydrocarbons. 

With a history of more than 25 years, the free radical-induced grafting of MAH onto polyolefin substrates is one of the most studied polyolefin modification processes.29 "29, 302 The process has been carried out in the melt phase, in various forms of extruders and batch mixers, and there are numerous patents covering various aspects of the process. It has also been carried out successfully in solution and in the solid state. The materials have a range of applications including their use as precursors to graft copolymers, either directly, or during the preparation of blends.297... 

The synthesis of this material is one of the major processes in phosphazene chemistry, as proved by the unbelievably high number of papers and patents that have appeared since the beginning of the phosphazene history [ 10,58]. 

The early history of the material is obscure. According to Palmer (1891) it goes back to 1832, but this statement has never been corroborated. Rostaing (1878) patented a series of pyrophosphate cements which could include Zn, Mg, Cd, Ba and Ca. Rollins (1879) described a cement formed from zinc oxide and syrupy phosphoric acid. In the same paper he mentions zinc phosphate cements recently introduced by Fletcher and Weston. Similar information is given in a discussion of the Pennsylvania... 

A patent file history, also called a file wrapper, is the complete set of documents for a patent filed with the U.S. Patent and Trademark Office. These papers chronicle communications and actions taken by the patent examiner, the applicant, and the applicant s attorney from the time of patent application to issue. File histories are available from commercial services such as Intellectual Property Network (described below). 

---