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Official data from INPI

PROCESSO PARA A PREPARAÇÃO DE UM ARTIGO CONFORMADO E PROCESSO PARA A PREPARAÇÃO DE UM COPOLÍMERO POLI(ÁLCOOL VINÍLICO).

Em AnáliseInvention Patent

Application data

Number

PI8402619

Type

Invention Patent

Filing

05/31/1984

Publication

04/30/1985

Progress at the INPI

  1. Filing05/31/84
  2. Publication04/30/85
  3. Examination06/23/87
  4. Allowance05/25/93
  5. Grant10/26/93
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 06/23/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Minnesota Mining and Manufacturing Company

US

See this company's full portfolio

Inventors

R. O. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

500,785 · 06/03/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Solicitação de exame técnico

#4.1

06/23/1987

RPI 870

Publicação do pedido de patente

#3.1

04/30/1985

RPI 758

Pedido de patente depositado

#2.1

08/07/1984

RPI 720

Carta-patente expirada

#21.1

Patente extinta em 31/05/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

10/26/1993

RPI 1195

Deferimento

#9.1

05/25/1993

RPI 1173

Exigência - art. 36 da LPI

#6.1

08/06/1991

RPI 1079

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