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DUPONT PHOTOMASKS INC

Overview
  • Total Patents
    92
About

DUPONT PHOTOMASKS INC has a total of 92 patent applications. Its first patent ever was published in 1989. It filed its patents most often in United States, WIPO (World Intellectual Property Organization) and China. Its main competitors in its focus markets optics, computer technology and semiconductors are TOPPAN PHOTOMASKS INC, PHOTRONICS INC and EBIHARA AKIMITSU.

Patent filings per year

Chart showing DUPONT PHOTOMASKS INCs patent filings per year from 1900 to 2020

Top inventors

# Name Total Patents
#1 Kalk Franklin D 9
#2 Englisch Andreas 8
#3 Dieu Laurent 8
#4 Gordon Joseph S 7
#5 Kalk Franklin Dean 7
#6 Rittman Dan 6
#7 Hughes Gregory P 6
#8 Cogdell Thomas T 5
#9 Gentry Jan E 5
#10 Oren Micha 5

Latest patents

Publication Filing date Title
CN1917982A Photomask and method for conveying information associated with a photomask substrate
WO2005050310A2 Phase shift photomask and method for improving printability of a structure on a wafer
CN1902468A Phase shift photomask and method for improving printability of a structure on a wafer
CN101268349A System and method for automatically mounting a pellicle assembly on a photomask
CN1846174A Photomask and method for maintaining optical properties of the same
WO2005010942A2 Method and apparatus for calibrating a metrology tool
US2005005256A1 Photomask and integrated circuit manufactured by automatically correcting design rule violations in a mask layout file
AU2003295844A8 Photomask and method for creating a protective layer on the same
CN1742232A Photomask and method for creating a protective layer on the same
AU2003295858A1 System and method for automatically transferring a defect image from an inspection system to a database
WO2004040374A2 Photomask assembly and method for protecting the same from contaminants generated during a lithography process
AU2003256326A1 Method and system for electronic order entry and automatic processing of photomask orders
AU2003237501A1 Photomask and method for repairing defects
US6904582B1 Photomask for reducing power supply voltage fluctuations in an integrated circuit and integrated circuit manufactured with the same
AU2003209383A1 Photomask and method for manufacturing the same
TW200302395A Photomask and method for manufacturing the same
US7101645B1 Reflective mask for short wavelength lithography
US2003118920A1 Multi-tone photomask and method for manufacturing the same
US6899981B1 Photomask and method for detecting violations in a mask pattern file using a manufacturing rule
US6893780B1 Photomask and method for reducing electrostatic discharge on the same with an ESD protection pattern