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Official data from INPI

PROCESSO PARA A PURIFICACAO BIOLOGICA DE AGUAS SERVIDAS

Em AnáliseInvention Patent

Application data

Number

PI7900799

Type

Invention Patent

Filing

02/11/1978

Publication

-

Progress at the INPI

  1. Filing02/11/78
  2. Publication
  3. Examination
  4. Allowance05/15/84
  5. Grant01/29/85
  6. Expired06/21/94

The letters patent expired on 06/21/1994: the term of protection has ended. The technology is in the public domain and may be freely used in Brazil.

Talk to a specialist

Latest action published by the INPI: 02/23/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

HOECHST AG

See this company's full portfolio

Inventors

B. A. (pessoa física)

L. G. (pessoa física)

M. G. (pessoa física)

S. G. (pessoa física)

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Cessão de direito de exploração

#22.1

02/23/1988

RPI 905

Concessão da patente

#16.1

01/29/1985

RPI 745

Notificação para pagamento de retribuição

#13.1

10/23/1984

RPI 731

9.1.3

07/10/1984

RPI 716

Deferimento

#9.1

05/15/1984

RPI 708

Exigência - art. 36 da LPI

#6.1

12/13/1983

RPI 686

Exigência - art. 36 da LPI

#6.1

11/16/1982

RPI 630

Carta-patente expirada

#21.1

06/21/1994

RPI 1229

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