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Official data from INPI

COMPOSIÇÃO TERMICAMENTE GERADORA DE IMAGEM E PELÍCULA PARA TRANSPARÊNCIA TERMICAMENTE GERADORA DE IMAGEM

DeferidaInvention Patent

Application data

Number

PI8501734

Type

Invention Patent

Filing

04/12/1985

Publication

12/10/1985

Progress at the INPI

  1. Filing04/12/85
  2. Publication12/10/85
  3. Examination01/26/88
  4. Allowance12/05/89
  5. Grant06/26/90
  6. Expired07/15/08

The letters patent expired on 07/15/2008: 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: 12/05/1989. 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

A. M. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

600.474 · 04/16/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

12/05/1989

RPI 998

Exigência - art. 36 da LPI

#6.1

05/16/1989

RPI 969

Solicitação de exame técnico

#4.1

01/26/1988

RPI 901

Publicação do pedido de patente

#3.1

12/10/1985

RPI 790

Pedido de patente depositado

#2.1

06/25/1985

RPI 766

Carta-patente expirada

#21.1

Patente extinta em 12/04/2000

07/15/2008

RPI 1958

Concessão da patente

#16.1

06/26/1990

RPI 1024

Notificação para pagamento de retribuição

#13.1

04/10/1990

RPI 1013

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