Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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SINAI
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SINAI
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Publication date
Application filed by SINAIfiledCriticalSINAI
Priority to ES363473ApriorityCriticalpatent/ES363473A1/en
Publication of ES363473A1publicationCriticalpatent/ES363473A1/en
Method for obtaining an optical screen, characterized in that it comprises irradiating a screen of optical material by a radiation chosen from the group comprising the electrons, gamma radiation and 2, according to the variable doses continuously from one point to another leading to a variable transmission capable of performing the elimination of the feet of the diffraction patterns of a given optical system, and then restoring, by a limited thermal operation, possibly associated with an ultraviolet irradiation, the unstable color centers. (Machine-translation by Google Translate, not legally binding)
ES363473A1969-02-101969-02-10Procedure for obtaining an optical screen. (Machine-translation by Google Translate, not legally binding)
ExpiredES363473A1
(en)
A procedure for the preparation of 3-oxo 17-beta-metoxy 17-alpha-methyl estra-4.9, ii-triene. (Machine-translation by Google Translate, not legally binding)