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Official data from INPI

APERFEICOAMENTO EM GERADOR DE GAS AQUECIDO PARA FINS DIVERSOS

ConcedidaInvention Patent
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Application data

Number

PI8108525

Type

Invention Patent

Filing

12/29/1981

Publication

06/21/1983
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Progress at the INPI

  1. Filing12/29/81
  2. Publication06/21/83
  3. Examination10/11/83
  4. Allowance08/13/85
  5. Grant03/25/86
  6. Terminated02/04/92

The patent was granted on 03/25/1986 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: 03/25/1986. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

QUIMICA IND BARRA DO PIRAI S A [BR]

Inventors

T. R. (pessoa física)

Technical data

IPC Classification

C10J 3/72

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/25/1986

RPI 805

Notificação para pagamento de retribuição

#13.1

12/17/1985

RPI 791

Republicação - classificação IPC

#15.11

08/27/1985

RPI 775

Deferimento

#9.1

08/13/1985

RPI 773

Exigência - art. 36 da LPI

#6.1

11/13/1984

RPI 734

Solicitação de exame técnico

#4.1

10/11/1983

RPI 677

Publicação antecipada

#3.2

06/21/1983

RPI 661

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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