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Official data from INPI

CONCENTRADOR DE RADIACAO DE FOCO PONTUAL E CONCENTRADOR PARA REFRACAO INCIDENTE DE RADIACAO

ConcedidaInvention Patent

Application data

Number

PI8107123

Type

Invention Patent

Filing

11/04/1980

Publication

07/20/1982

Progress at the INPI

  1. Filing11/04/80
  2. Publication07/20/82
  3. Examination09/11/84
  4. Allowance04/16/85
  5. Grant10/29/85
  6. Expired08/19/08

The letters patent expired on 08/19/2008: 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: 10/29/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MINNESOTA MINING & MFG [US]

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Inventors

V. F. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/29/1985

RPI 784

Notificação para pagamento de retribuição

#13.1

08/06/1985

RPI 772

Deferimento

#9.1

04/16/1985

RPI 756

Solicitação de exame técnico

#4.1

09/11/1984

RPI 725

Publicação do pedido de patente

#3.1

07/20/1982

RPI 613

Pedido de patente depositado

#2.1

12/15/1981

RPI 582

Carta-patente expirada

#21.1

Patente extinta em 03/11/96

08/19/2008

RPI 1963

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