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Official data from INPI

IMA PERMANENTE LIGADO A MATRIAZ,E,PROCESSO DE SUA FABRICACAO

ConcedidaInvention Patent

Application data

Number

PI8000009

Type

Invention Patent

Filing

01/02/1979

Publication

-

Progress at the INPI

  1. Filing01/02/79
  2. Publication
  3. Examination10/05/82
  4. Allowance07/19/83
  5. Grant01/31/84
  6. Expired05/16/95

The letters patent expired on 05/16/1995: 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: 01/31/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG

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Inventors

B. E. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

01/31/1984

RPI 693

Notificação para pagamento de retribuição

#13.1

11/16/1983

RPI 682

Deferimento

#9.1

07/19/1983

RPI 665

Solicitação de exame técnico

#4.1

10/05/1982

RPI 624

Carta-patente expirada

#21.1

05/16/1995

RPI 1276

Pedido de licença compulsória

#20.1

02/16/1994

RPI 1211

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