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Official data from INPI

LIMITADOR DE FOLGA PARA UM CASSETE DE FITA MAGNÉTICA.

Em ExigênciaInvention Patent

Application data

Number

PI8403755

Type

Invention Patent

Filing

07/27/1984

Publication

07/02/1985

Progress at the INPI

  1. Filing07/27/84
  2. Publication07/02/85
  3. Examination06/16/87
  4. Allowance05/08/90
  5. Grant11/27/90
  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: 10/24/1989. 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

C. G. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

520.606 · 08/05/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Exigência - art. 36 da LPI

#6.1

10/24/1989

RPI 992

Solicitação de exame técnico

#4.1

06/16/1987

RPI 869

Publicação do pedido de patente

#3.1

07/02/1985

RPI 767

Pedido de patente depositado

#2.1

10/02/1984

RPI 728

Carta-patente expirada

#21.1

Patente extinta em 27/07/99

07/08/2008

RPI 1957

Concessão da patente

#16.1

11/27/1990

RPI 1043

Notificação para pagamento de retribuição

#13.1

08/21/1990

RPI 1029

Deferimento

#9.1

05/08/1990

RPI 1017

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