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Official data from INPI

ELEMENTO FOTOGRÁFICO

PublicadaInvention Patent

Application data

Number

PI8802796

Type

Invention Patent

Filing

06/08/1988

Publication

01/03/1989

Progress at the INPI

  1. Filing06/08/88
  2. Publication01/03/89
  3. Examination02/13/91
  4. Allowance09/12/95
  5. Grant04/30/96
  6. Expired09/02/08

The letters patent expired on 09/02/2008: 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: 01/03/1989. 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

J. J. (pessoa física)

US

J. L. (pessoa física)

US

P. S. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

059,931 · 06/09/1987

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Publicação do pedido de patente

#3.1

01/03/1989

RPI 950

Pedido de patente depositado

#2.1

10/25/1988

RPI 940

Carta-patente expirada

#21.1

Patente extinta em 08/06/2003

09/02/2008

RPI 1965

Concessão da patente

#16.1

04/30/1996

RPI 1326

Deferimento

#9.1

09/12/1995

RPI 1293

Exigência - art. 36 da LPI

#6.1

01/10/1995

RPI 1258

Solicitação de exame técnico

#4.1

02/13/1991

RPI 1054

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