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Official data from INPI

PROCESSO PARA A CARBURACAO DE PECAS METALICAS, E, FORNO DE RECOZIMENTO PARA EXECUCAO DESTE PROCESSO

ConcedidaInvention Patent
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Application data

Number

PI8102150

Type

Invention Patent

Filing

10/08/1980

Publication

08/17/1982
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Progress at the INPI

  1. Filing10/08/80
  2. Publication08/17/82
  3. Examination06/05/84
  4. Allowance05/17/88
  5. Grant11/29/88
  6. Terminated09/25/90

The patent was granted on 11/29/1988 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

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Latest action published by the INPI: 11/29/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

LINDE AG

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Inventors

C. R. (pessoa física)

D. W. (pessoa física)

L. K. (pessoa física)

Technical data

IPC Classification

C21D 9/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1988

RPI 945

Notificação para pagamento de retribuição

#13.1

09/06/1988

RPI 933

Deferimento

#9.1

05/17/1988

RPI 917

Exigência - art. 36 da LPI

#6.1

11/24/1987

RPI 892

Conhecimento de parecer técnico

#7.1

06/09/1987

RPI 868

14.1

07/16/1985

RPI 769

Exigência - art. 36 da LPI

#6.1

12/04/1984

RPI 737

Solicitação de exame técnico

#4.1

06/05/1984

RPI 711

14.1

09/27/1983

RPI 675

Publicação do pedido de patente

#3.1

08/17/1982

RPI 617

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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