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Official data from INPI

ISOLANTE TÉRMICO PARA COQUILHAS

ConcedidaInvention Patent

Application data

Number

PI8107409

Type

Invention Patent

Filing

11/16/1981

Publication

06/21/1983

Progress at the INPI

  1. Filing11/16/81
  2. Publication06/21/83
  3. Examination02/26/85
  4. Allowance05/16/89
  5. Grant11/28/89
  6. Terminated03/19/96

The patent was granted on 11/28/1989 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: 11/28/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Companhia Siderúrgica Nacional - CSN

RJ, BR

See this company's full portfolio

Inventors

B. V. (pessoa física)

BR

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/28/1989

RPI 997

Notificação para pagamento de retribuição

#13.1

09/12/1989

RPI 986

Deferimento

#9.1

05/16/1989

RPI 969

Exigência - art. 36 da LPI

#6.1

02/09/1988

RPI 903

Solicitação de exame técnico

#4.1

02/26/1985

RPI 749

Publicação do pedido de patente

#3.1

06/21/1983

RPI 661

Pedido de patente depositado

#2.1

12/29/1981

RPI 584

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C04B 35/02; C04B 35/68; B22C 1/04.

03/27/2018

RPI 2464

Anuidade - prazo legal encerrado

#18.2

03/19/1996

RPI 1320

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