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Official data from INPI

FOLHA DE TUBO, CONJUNTO DE FOLHA DE TUBO/FIBRA OCA E PROCESSO PARA FABRICACAO DE CONJUNTO DE FOLHA DE TUBO/FIBRA OCA

ConcedidaInvention Patent

Application data

Number

PI8000980

Type

Invention Patent

Filing

02/16/1979

Publication

-

Progress at the INPI

  1. Filing02/16/79
  2. Publication
  3. Examination
  4. Allowance04/19/83
  5. Grant11/29/83
  6. Terminated09/25/90

The patent was granted on 11/29/1983 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: 11/29/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

DOW CHEMICAL CO

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Inventors

F. T. (pessoa física)

J. A. (pessoa física)

L. C. (pessoa física)

R. T. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

11/29/1983

RPI 684

Notificação para pagamento de retribuição

#13.1

09/06/1983

RPI 672

Deferimento

#9.1

04/19/1983

RPI 652

Exigência - art. 36 da LPI

#6.1

09/14/1982

RPI 621

Anuidade - prazo legal encerrado

#18.2

09/25/1990

RPI 1034

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