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Official data from INPI

ARRANJO PARA COLETOR DE POLUICAO,ESPECIALMENTE OLEO,A PARTIR DE UMA SUPERFICIE LIQUIDA CONTAMINADA

ConcedidaInvention Patent

Application data

Number

PI7802585

Type

Invention Patent

Filing

04/27/1977

Publication

-

Progress at the INPI

  1. Filing04/27/77
  2. Publication
  3. Examination
  4. Allowance06/14/83
  5. Grant12/27/83
  6. Expired07/06/93

The letters patent expired on 07/06/1993: 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: 12/27/1983. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

W. G. (pessoa física)

Inventors

W. G. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

12/27/1983

RPI 688

Notificação para pagamento de retribuição

#13.1

10/04/1983

RPI 676

Deferimento

#9.1

06/14/1983

RPI 660

Exigência - art. 36 da LPI

#6.1

01/04/1983

RPI 637

6.2

12/08/1981

RPI 581

Carta-patente expirada

#21.1

07/06/1993

RPI 1179

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