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Official data from INPI

PROCESSO DE CONFORMACAO DE FINOS DE CARVAO VEGETAL E FINOS DE COQUE TENDO EM VISTA SUA UTILIZACAO EM METALURGIA DE SIDERURGIA

ConcedidaInvention Patent

Application data

Number

PI7800002

Type

Invention Patent

Filing

01/02/1978

Publication

-

Progress at the INPI

  1. Filing01/02/78
  2. Publication
  3. Examination12/14/82
  4. Allowance02/21/84
  5. Grant09/25/84
  6. Expired07/20/93

The letters patent expired on 07/20/1993: 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: 09/25/1984. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

A. S. (pessoa física)

B. C. (pessoa física)

Inventors

A. S. (pessoa física)

B. C. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/25/1984

RPI 727

Notificação para pagamento de retribuição

#13.1

06/12/1984

RPI 712

Deferimento

#9.1

02/21/1984

RPI 696

Exigência - art. 36 da LPI

#6.1

06/21/1983

RPI 661

Solicitação de exame técnico

#4.1

12/14/1982

RPI 634

11.8

10/13/1982

RPI 625

Arquivamento - Art. 33 da LPI

#11.1

07/13/1982

RPI 612

Carta-patente expirada

#21.1

07/20/1993

RPI 1181

22.2

10/13/1992

RPI 1141

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