Introduction to Derwent World Patents Index on ... - STN International
Introduction to Derwent World Patents Index on ... - STN International
Introduction to Derwent World Patents Index on ... - STN International
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Date fields and examples<br />
Publicati<strong>on</strong> Date (PD) => S 1 MAY 2004/PD<br />
Publicati<strong>on</strong> Year (PY) => S 1998 - 1999/PY<br />
Publicati<strong>on</strong> Date Basic => S JAN - FEB 2007/PD.B<br />
Publicati<strong>on</strong> Year Basic => S PY.B > 2000<br />
Applicati<strong>on</strong> Date (AD) => S MARCH 1993/AD<br />
Applicati<strong>on</strong> Year (AY) => S AY < 1991<br />
Priority Date (PRD) => S APRIL 1, 1995/PRD<br />
Priority Year (PRY) => S 1987/PRY<br />
Priority Date First => S 19780401/PRDF<br />
Priority Year First => S PRYF >= 1975<br />
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