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Official data from INPI

CATALISADOR PARA A CONVERSAO DO ANIDRIDO SULFUROSO EM ANIDRIDO SULFURICO E SUA REACAO INVERSA

Em AnáliseInvention Patent

Application data

Number

PI7701470

Type

Invention Patent

Filing

03/11/1976

Publication

-

Progress at the INPI

  1. Filing03/11/76
  2. Publication
  3. Examination
  4. Allowance08/09/83
  5. Grant02/28/84
  6. Terminated05/10/88

The patent was granted on 02/28/1984 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: 05/10/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. K. (pessoa física)

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Inventors

L. P. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

05/10/1988

RPI 916

Concessão da patente

#16.1

02/28/1984

RPI 697

Notificação para pagamento de retribuição

#13.1

11/29/1983

RPI 684

Deferimento

#9.1

08/09/1983

RPI 668

Exigência - art. 36 da LPI

#6.1

08/10/1982

RPI 616

Exigência - art. 36 da LPI

#6.1

01/26/1982

RPI 588

15.0

11/24/1981

RPI 579

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