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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UMA SOLUÇÃO PRESERVANTE OU DE LIMPEZA DE LENTE DE CONTATO MACIA E PROCESSO DE LIMPEZA OU PRESERVAÇÃO DE UMA LENTE DE CONTATO MACIA.

PublicadaInvention Patent

Application data

Number

PI8700770

Type

Invention Patent

Filing

02/19/1987

Publication

12/22/1987

Progress at the INPI

  1. Filing02/19/87
  2. Publication12/22/87
  3. Examination08/21/90
  4. Allowance10/19/93
  5. Grant05/31/94
  6. Expired07/29/08

The letters patent expired on 07/29/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 12/22/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Ciba-Geigy AG

CH

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Inventors

C. P. (pessoa física)

US

F. T. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

831.221 · 02/19/1986

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

12/22/1987

RPI 896

Pedido de patente depositado

#2.1

06/09/1987

RPI 868

Carta-patente expirada

#21.1

Patente extinta em 19/02/2002

07/29/2008

RPI 1960

Concessão da patente

#16.1

05/31/1994

RPI 1226

Deferimento

#9.1

10/19/1993

RPI 1194

Exigência - art. 36 da LPI

#6.1

02/16/1993

RPI 1159

Exigência - art. 36 da LPI

#6.1

01/14/1992

RPI 1102

Solicitação de exame técnico

#4.1

08/21/1990

RPI 1029

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