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Official data from INPI

"MÉTODO DE PREPARAÇÃO DE ESTERÓIDES 16ALFA, 17ALFA-DIALQUILADOS"

ArquivadaInvention PatentPCT · US1998023641

Application data

Number

PI9814717

Type

Invention Patent

Filing

11/05/1998

Publication

10/03/2000

PCT

US1998023641

Progress at the INPI

  1. Filing11/05/98
  2. Publication10/03/00
  3. Abandoned
  4. Allowance
  5. Grant
  6. In force

The application was abandoned: examination was not requested within the 36 months following the 11/05/1998 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: 07/06/2004. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcon Laboratories, Inc.

US

See this company's full portfolio

Inventors

R. C. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

60/067,148 · 12/02/1997

Abstract

Patente de Invenção: "MÉTODO DE PREPARAÇÃO DE ESTERÓIDES 16ALFA,17ALFA-DIALQUILADOS" . Esteróides 16alfa,17alfa-dialquilados são preparados por reação de um éter de 16-alfa-17(20)-enil-20-silila com um agente de alquilação e um agente de clivagem de éter de enol silila em um solvente adequado.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Arquivamento definitivo - Art. 33 da LPI

#11.1.1

07/06/2004

RPI 1748

Arquivamento - Art. 33 da LPI

#11.1

11/18/2003

RPI 1715

Notificação de entrada na fase nacional - PCT

#1.3

10/03/2000

RPI 1552

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