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Official data from INPI

UNIDADE DE REGISTRO SENSIVEL A PRESSAO

ConcedidaInvention Patent

Application data

Number

PI8108424

Type

Invention Patent

Filing

12/26/1980

Publication

-

Progress at the INPI

  1. Filing12/26/80
  2. Publication
  3. Examination04/19/83
  4. Allowance02/12/85
  5. Grant08/27/85
  6. Terminated02/04/92

The patent was granted on 08/27/1985 and later terminated for failure to pay the annuities. The technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 08/27/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

MITSUI TOATSU CHEMICALS [JP]

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Inventors

H. A. (pessoa física)

K. H. (pessoa física)

M. A. (pessoa física)

M. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/27/1985

RPI 775

Notificação para pagamento de retribuição

#13.1

05/28/1985

RPI 762

Deferimento

#9.1

02/12/1985

RPI 747

Exigência - art. 36 da LPI

#6.1

10/11/1983

RPI 677

Solicitação de exame técnico

#4.1

04/19/1983

RPI 652

Pedido de patente depositado

#2.1

02/24/1982

RPI 592

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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