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Official data from INPI

PROCESSO PARA PRODUÇÃO DE COBRE EMPOLADO, PARTINDO DE UM MATERIAL DE MINÉRIO DE SULFETO DE COBRE

ConcedidaInvention Patent

Application data

Number

PI8203192

Type

Invention Patent

Filing

05/31/1982

Publication

05/17/1983

Progress at the INPI

  1. Filing05/31/82
  2. Publication05/17/83
  3. Examination08/06/85
  4. Allowance11/16/88
  5. Grant10/24/89
  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: 10/24/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

K. C. (pessoa física)

US

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Inventors

D. G. (pessoa física)

US

K. R. (pessoa física)

US

Technical data

IPC Classification

Priority claims

US

268.765 · 06/01/1981

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/24/1989

RPI 992

14.1

07/04/1989

RPI 976

14.4

06/06/1989

RPI 972

Notificação para pagamento de retribuição

#13.1

03/07/1989

RPI 959

14.3

02/21/1989

RPI 957

Deferimento

#9.1

11/16/1988

RPI 943

6.2

08/19/1986

RPI 826

Solicitação de exame técnico

#4.1

08/06/1985

RPI 772

Publicação do pedido de patente

#3.1

05/17/1983

RPI 656

Pedido de patente depositado

#2.1

07/20/1982

RPI 613

Carta-patente expirada

#21.1

Patente extinta em 31/05/97

07/01/2008

RPI 1956

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