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Official data from INPI

PROCESSO PARA O TRATAMENTO DE ÁGUAS RESIDUAIS.

ConcedidaInvention PatentPCT · EP1981000004
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Application data

Number

PI8108962

Type

Invention Patent

Filing

01/21/1981

Publication

12/14/1982

PCT

EP1981000004
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Progress at the INPI

  1. Filing01/21/81
  2. Publication12/14/82
  3. Examination08/07/84
  4. Allowance03/31/87
  5. Grant09/29/87
  6. Terminated11/08/94

The patent was granted on 09/29/1987 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: 09/29/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

H. A. (pessoa física)

DE

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Inventors

D. (pessoa física)

K. D. (pessoa física)

K. G. (pessoa física)

S. D. (pessoa física)

S. G. (pessoa física)

Technical data

IPC Classification

C01B 33/26C02F 1/28C02F 1/52

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

09/29/1987

RPI 884

Deferimento

#9.1

03/31/1987

RPI 858

Exigência - art. 36 da LPI

#6.1

08/05/1986

RPI 824

Conhecimento de parecer técnico

#7.1

12/24/1985

RPI 792

Exigência - art. 36 da LPI

#6.1

04/09/1985

RPI 755

Solicitação de exame técnico

#4.1

08/07/1984

RPI 720

Notificação de entrada na fase nacional - PCT

#1.3

12/14/1982

RPI 634

Anuidade - prazo legal encerrado

#18.2

11/08/1994

RPI 1249

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