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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8207112

Type

Invention Patent

Filing

12/08/1982

Publication

10/11/1983

Progress at the INPI

  1. Filing12/08/82
  2. Publication10/11/83
  3. Examination01/28/86
  4. Allowance03/15/88
  5. Grant09/27/88
  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.

Talk to a specialist

Latest action published by the INPI: 09/27/1988. 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

P. E. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/27/1988

RPI 936

Notificação para pagamento de retribuição

#13.1

07/19/1988

RPI 926

Deferimento

#9.1

03/15/1988

RPI 908

Exigência - art. 36 da LPI

#6.1

04/14/1987

RPI 860

Solicitação de exame técnico

#4.1

01/28/1986

RPI 797

Publicação do pedido de patente

#3.1

10/11/1983

RPI 677

Pedido de patente depositado

#2.1

02/01/1983

RPI 641

Carta-patente expirada

#21.1

Patente extinta em 08/12/97

07/01/2008

RPI 1956

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