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Official data from INPI

APARELHO PARA A RECUPERAÇÃO DE AREIA DE FUNDIÇÃO

Em AnáliseInvention Patent

Application data

Number

PI8204833

Type

Invention Patent

Filing

08/18/1982

Publication

01/03/1984

Progress at the INPI

  1. Filing08/18/82
  2. Publication01/03/84
  3. Examination05/22/84
  4. Allowance07/14/87
  5. Grant12/29/87
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 07/12/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

GMD. Engineered Systems, Inc

US

Inventors

R. A. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

346,235 · 02/05/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Pedido de licença compulsória

#20.1

07/12/1988

RPI 925

Concessão da patente

#16.1

12/29/1987

RPI 897

Deferimento

#9.1

07/14/1987

RPI 873

Exigência - art. 36 da LPI

#6.1

09/09/1986

RPI 829

Conhecimento de parecer técnico

#7.1

10/01/1985

RPI 780

6.2

11/27/1984

RPI 736

Solicitação de exame técnico

#4.1

05/22/1984

RPI 709

Publicação do pedido de patente

#3.1

01/03/1984

RPI 689

Pedido de patente depositado

#2.1

10/05/1982

RPI 624

Carta-patente expirada

#21.1

Patente extinta em 18/08/97

07/01/2008

RPI 1956

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