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Official data from INPI

PROCESSO PARA REMOVER UREIA,AMONIA E DIOXIDO DE CARBONO DE SOLUCOES AQUOSAS DILUIDAS

ConcedidaInvention Patent
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Application data

Number

PI8107728

Type

Invention Patent

Filing

11/28/1980

Publication

08/31/1982
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Progress at the INPI

  1. Filing11/28/80
  2. Publication08/31/82
  3. Examination09/18/84
  4. Allowance07/08/86
  5. Grant03/17/87
  6. Terminated02/04/92

The patent was granted on 03/17/1987 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: 03/17/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

UNIE VAN KUNSTMESTFAB BV [NL]

Inventors

B. (pessoa física)

B. (pessoa física)

J. K. (pessoa física)

M. G. (pessoa física)

N. V. (pessoa física)

Z. J. (pessoa física)

Technical data

IPC Classification

C02F 1/26C02F 9/00C07C 239/00C07C 273/00C07C 273/04C07C 67/00

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

03/17/1987

RPI 856

Notificação para pagamento de retribuição

#13.1

11/04/1986

RPI 837

Deferimento

#9.1

07/08/1986

RPI 820

Exigência - art. 36 da LPI

#6.1

07/30/1985

RPI 771

Exigência - art. 36 da LPI

#6.1

03/05/1985

RPI 750

Solicitação de exame técnico

#4.1

09/18/1984

RPI 726

Publicação do pedido de patente

#3.1

08/31/1982

RPI 619

Pedido de patente depositado

#2.1

01/12/1982

RPI 586

Anuidade - prazo legal encerrado

#18.2

02/04/1992

RPI 1105

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