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Official data from INPI

SEM TITULO

ConcedidaInvention Patent

Application data

Number

PI8008722

Type

Invention Patent

Filing

05/22/1980

Publication

-

Progress at the INPI

  1. Filing05/22/80
  2. Publication
  3. Examination05/03/83
  4. Allowance01/07/86
  5. Grant06/24/86
  6. Expired11/21/95

The letters patent expired on 11/21/1995: 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: 06/24/1986. 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. J. (pessoa física)

W. L. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

06/24/1986

RPI 818

Notificação para pagamento de retribuição

#13.1

05/06/1986

RPI 811

Deferimento

#9.1

01/07/1986

RPI 794

8.1

09/24/1985

RPI 779

Exigência - art. 36 da LPI

#6.1

11/20/1984

RPI 735

Exigência - art. 36 da LPI

#6.1

01/31/1984

RPI 693

Solicitação de exame técnico

#4.1

05/03/1983

RPI 654

Carta-patente expirada

#21.1

11/21/1995

RPI 1303

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