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Official data from INPI

COMPOSIÇÀO DE LIMPEZA PARA LIMPAR SUPERFÍCIES ÓTICAS E PROCESSO PARA LIMPAR UMA LENTE DE CONTATO

ConcedidaInvention Patent
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Application data

Number

PI8202239

Type

Invention Patent

Filing

04/19/1982

Publication

03/29/1983
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Progress at the INPI

  1. Filing04/19/82
  2. Publication03/29/83
  3. Examination05/28/85
  4. Allowance10/04/88
  5. Grant09/26/89
  6. Expired07/01/08

The letters patent expired on 07/01/2008: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

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Latest action published by the INPI: 09/26/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Alcon Laboratories, Inc.

US

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Inventors

K. S. (pessoa física)

US

L. S. (pessoa física)

US

R. B. (pessoa física)

US

Technical data

IPC Classification

C11D 3/37G02C 13/00

Priority claims

US

; · 12/31/1900

US

255,861 · 04/20/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/26/1989

RPI 988

Retificação

#15.6

08/08/1989

RPI 981

Retificação

#15.3

06/06/1989

RPI 972

Deferimento

#9.1

10/04/1988

RPI 937

Exigência - art. 36 da LPI

#6.1

03/29/1988

RPI 910

Solicitação de exame técnico

#4.1

05/28/1985

RPI 762

Publicação do pedido de patente

#3.1

03/29/1983

RPI 649

Pedido de patente depositado

#2.1

06/08/1982

RPI 607

Carta-patente expirada

#21.1

Patente extinta em 19/04/97

07/01/2008

RPI 1956

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