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Official data from INPI

Processo de gaseificação contínua de material celulósico e aparelho para sua realização.

ConcedidaInvention Patent

Application data

Number

PI8106311

Type

Invention Patent

Filing

09/30/1981

Publication

06/22/1982

Progress at the INPI

  1. Filing09/30/81
  2. Publication06/22/82
  3. Examination06/12/84
  4. Allowance03/11/86
  5. Grant09/30/86
  6. Terminated09/25/90

The patent was granted on 09/30/1986 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: 09/30/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Allis - Chalmers Corporation

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Inventors

L. J. (pessoa física)

P. M. (pessoa física)

T. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/30/1986

RPI 832

Notificação para pagamento de retribuição

#13.1

07/01/1986

RPI 819

Deferimento

#9.1

03/11/1986

RPI 803

Exigência - art. 36 da LPI

#6.1

03/26/1985

RPI 753

Solicitação de exame técnico

#4.1

06/12/1984

RPI 712

Publicação do pedido de patente

#3.1

06/22/1982

RPI 609

Pedido de patente depositado

#2.1

11/17/1981

RPI 578

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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