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Official data from INPI

FILTRO DE TRANSMISSÃO ÓTICA

Em ExigênciaInvention Patent

Application data

Number

PI8402153

Type

Invention Patent

Filing

05/08/1984

Publication

12/18/1984

Progress at the INPI

  1. Filing05/08/84
  2. Publication12/18/84
  3. Examination12/16/86
  4. Allowance10/02/90
  5. Grant04/30/91
  6. Expired07/08/08

The letters patent expired on 07/08/2008: 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: 09/08/1987. 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

P. K. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

492.690 · 05/09/1983

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

6.2

09/08/1987

RPI 881

Solicitação de exame técnico

#4.1

12/16/1986

RPI 843

Publicação do pedido de patente

#3.1

12/18/1984

RPI 739

Pedido de patente depositado

#2.1

07/17/1984

RPI 717

Carta-patente expirada

#21.1

Patente extinta em 08/05/99

07/08/2008

RPI 1957

Republicação - classificação IPC

#15.11

08/06/1991

RPI 1079

Concessão da patente

#16.1

04/30/1991

RPI 1065

Notificação para pagamento de retribuição

#13.1

01/15/1991

RPI 1050

Deferimento

#9.1

10/02/1990

RPI 1035

Exigência - art. 36 da LPI

#6.1

05/08/1990

RPI 1017

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