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Official data from INPI

LIGA FUNDIDA A BASE DE FERRO RESISTENTE AO CALOR E TUBO FABRICADO COM A MESMA

Em AnáliseInvention Patent
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Application data

Number

PI8100120

Type

Invention Patent

Filing

01/10/1980

Publication

-
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Progress at the INPI

  1. Filing01/10/80
  2. Publication
  3. Examination
  4. Allowance08/11/87
  5. Grant02/23/88
  6. Terminated11/16/88

The patent was granted on 02/23/1988 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: 11/16/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

KUBOTA LTD

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Inventors

J. S. (pessoa física)

T. K. (pessoa física)

T. M. (pessoa física)

Technical data

IPC Classification

C22C 37/00C22C 38/54

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

11/16/1988

RPI 943

Concessão da patente

#16.1

02/23/1988

RPI 905

Notificação para pagamento de retribuição

#13.1

12/01/1987

RPI 893

Deferimento

#9.1

08/11/1987

RPI 877

Exigência - art. 36 da LPI

#6.1

01/21/1987

RPI 848

Exigência - art. 36 da LPI

#6.1

03/04/1986

RPI 802

Exigência - art. 36 da LPI

#6.1

07/31/1984

RPI 719

Exigência - art. 36 da LPI

#6.1

02/21/1984

RPI 696

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