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Official data from INPI

Aperfeiçoamento em um processo de uréia em um processo de nitrato de amônio, e, em uma instalação.

Em AnáliseInvention Patent

Application data

Number

PI8000500

Type

Invention Patent

Filing

01/25/1980

Publication

-

Progress at the INPI

  1. Filing01/25/80
  2. Publication
  3. Examination10/05/82
  4. Allowance12/06/83
  5. Grant05/29/84
  6. In force01/25/00

The patent was granted on 05/29/1984 and is in force until 01/25/2000. Until then, no one may make, use or sell the invention in Brazil without the owner's authorisation.

Protection valid until:01/25/2000

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Latest action published by the INPI: 03/07/1989. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

CF Industries Inc.

Inventors

B. J. (pessoa física)

M. W. (pessoa física)

Technical data

Priority claims

US

007,748 · 01/30/1979

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

22.2

03/07/1989

RPI 959

Anuidade - prazo legal encerrado

#18.2

11/16/1988

RPI 943

Concessão da patente

#16.1

05/29/1984

RPI 710

Notificação para pagamento de retribuição

#13.1

03/27/1984

RPI 701

Deferimento

#9.1

12/06/1983

RPI 685

Exigência - art. 36 da LPI

#6.1

07/12/1983

RPI 664

Solicitação de exame técnico

#4.1

10/05/1982

RPI 624

Republicação - classificação IPC

#15.11

Procedimento automático de reclassificação. As classificações IPC anteriores eram: C07C 126/02; C01C 1/18; C07C 239/00; C07C 273/04; C07C 273/16; C07C 273/00.

03/27/2018

RPI 2464

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