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Official data from INPI

INSTALAÇÃO DE FABRICAÇÃO DE CARBONETO DE SILÍCIO E FORNO À RESITÊNCIA ELÉTRICA.

ConcedidaInvention Patent

Application data

Number

PI8006188

Type

Invention Patent

Filing

09/26/1980

Publication

-

Progress at the INPI

  1. Filing09/26/80
  2. Publication
  3. Examination03/15/83
  4. Allowance03/17/87
  5. Grant08/25/87
  6. Terminated08/02/94

The patent was granted on 08/25/1987 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: 08/25/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Dresser Industries, Inc

US

See this company's full portfolio

Inventors

P. J. (pessoa física)

Technical data

Priority claims

US

079.763 · 09/28/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/25/1987

RPI 879

Deferimento

#9.1

03/17/1987

RPI 856

Exigência - art. 36 da LPI

#6.1

12/03/1985

RPI 789

Republicação - classificação IPC

#15.11

10/02/1984

RPI 728

Solicitação de exame técnico

#4.1

03/15/1983

RPI 647

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C01B 31/36; H05B 3/62.

03/27/2018

RPI 2464

Anuidade - prazo legal encerrado

#18.2

08/02/1994

RPI 1235

Pedido de licença compulsória

#20.1

03/01/1990

RPI 1007

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