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Official data from INPI

APERFEIÇOAMENTOS EM REGISTROS DE GÁS.

Em AnáliseInvention Patent

Application data

Number

PI8306437

Type

Invention Patent

Filing

11/21/1983

Publication

05/08/1984

Progress at the INPI

  1. Filing11/21/83
  2. Publication05/08/84
  3. Examination12/04/84
  4. Allowance04/15/86
  5. Grant11/24/87
  6. Terminated04/23/96

The patent was granted on 11/24/1987 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: 10/10/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Equipamentos NGK - Rinnai Ltda.

SP, BR

See this company's full portfolio

Inventors

Y. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

10/10/1989

RPI 990

20.7

07/12/1988

RPI 925

Concessão da patente

#16.1

11/24/1987

RPI 892

Notificação para pagamento de retribuição

#13.1

08/11/1987

RPI 877

110

04/07/1987

RPI 859

Recurso

#12.1

08/26/1986

RPI 827

Deferimento

#9.1

04/15/1986

RPI 808

Solicitação de exame técnico

#4.1

12/04/1984

RPI 737

14.7

08/14/1984

RPI 721

14.4

08/07/1984

RPI 720

Publicação antecipada

#3.2

05/08/1984

RPI 707

Pedido de patente depositado

#2.1

01/31/1984

RPI 693

Anuidade - prazo legal encerrado

#18.2

04/23/1996

RPI 1325

18.8

01/16/1990

RPI 1002

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