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Official data from INPI

LAMINADO RETRO-REFLETOR E PROCESSO PARA FORMAÇÃO DE IMAGEM DIRECIONALMENTE EM UM LAMINADO RETRO-REFLETOR.

DeferidaInvention Patent

Application data

Number

PI8503626

Type

Invention Patent

Filing

07/31/1985

Publication

04/29/1986

Progress at the INPI

  1. Filing07/31/85
  2. Publication04/29/86
  3. Examination03/15/88
  4. Allowance05/29/90
  5. Grant09/25/90
  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.

Talk to a specialist

Latest action published by the INPI: 08/08/1989. 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

B. O. (pessoa física)

US

T. B. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

637.474 · 08/03/1984

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Deferimento

#9.1

08/08/1989

RPI 981

Solicitação de exame técnico

#4.1

03/15/1988

RPI 908

Publicação do pedido de patente

#3.1

04/29/1986

RPI 810

Pedido de patente depositado

#2.1

10/15/1985

RPI 782

Carta-patente expirada

#21.1

Patente extinta em 31/07/2000

07/15/2008

RPI 1958

Republicação - classificação IPC

#15.11

06/18/1991

RPI 1072

Concessão da patente

#16.1

09/25/1990

RPI 1034

100

05/29/1990

RPI 1020

Recurso

#12.1

01/23/1990

RPI 1003

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