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Official data from INPI

ARTIGO DE TRANSFERENCIA A SECO E PROCESSO PARA SUA PREPARACAO

ConcedidaInvention Patent

Application data

Number

PI8302401

Type

Invention Patent

Filing

05/10/1982

Publication

01/10/1984

Progress at the INPI

  1. Filing05/10/82
  2. Publication01/10/84
  3. Examination05/13/86
  4. Allowance12/29/87
  5. Grant07/26/88
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 07/26/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG [US]

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Inventors

B. E. (pessoa física)

F. V. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

07/26/1988

RPI 927

Notificação para pagamento de retribuição

#13.1

05/10/1988

RPI 916

Deferimento

#9.1

12/29/1987

RPI 897

Conhecimento de parecer técnico

#7.1

07/14/1987

RPI 873

Solicitação de exame técnico

#4.1

05/13/1986

RPI 812

Publicação do pedido de patente

#3.1

01/10/1984

RPI 690

Pedido de patente depositado

#2.1

06/28/1983

RPI 662

Carta-patente expirada

#21.1

Patente extinta em 09/05/98

08/19/2008

RPI 1963

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