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Official data from INPI

ANTAGONISTAS DE LTB4 À BASE DE BENZOPIRANOS E RELACIONADOS

ArquivadaInvention PatentPCT · US1992008555

Application data

Number

PI9207064

Type

Invention Patent

Filing

10/13/1992

Publication

12/19/1995

PCT

US1992008555

Progress at the INPI

  1. Filing10/13/92
  2. Publication12/19/95
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 10/13/1992 filing, the deadline set by art. 33 of the Brazilian IP Act. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/09/1996. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Pfizer, Inc.

US

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Inventors

K. K. (pessoa física)

US

L. R. (pessoa física)

US

L. J. (pessoa física)

US

S. R. (pessoa física)

US

Technical data

Priority claims

US

824678 · 01/23/1992

US

890055 · 05/28/1992

Abstract

Antagonistas de leucotrieno B~ 4~ à base de benozpiranos e de outros compostos benzocondensados que têm a fórmula da fig (I) em que A, n, R^ 1^, R^ 2^ e R^ 3^ são conforme aqui definidos. Os compostos de fórmula I, em que R^ 1^ representa CR^ 4^R^ 5^COOR^ 13^ substituinte em c, podem ser preparados a partir dos correspondentes compostos de CF~ 3~SO~ 3~ substituinte em c por reação com um ceteno-acetal trimetilsilílico.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento - Art. 33 da LPI

#11.1

04/09/1996

RPI 1323

Notificação de entrada na fase nacional - PCT

#1.3

12/19/1995

RPI 1307

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