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Official data from INPI

TORRE DE LAVAGEM COM PULVERIZAÇÃO PARA PURIFICAÇÃO DE GASES E DE VAPOR D'ÁGUA CARREGADOS DE POEIRA.

ConcedidaInvention Patent

Application data

Number

PI8101504

Type

Invention Patent

Filing

03/13/1981

Publication

-

Progress at the INPI

  1. Filing03/13/81
  2. Publication
  3. Examination11/08/83
  4. Allowance10/23/84
  5. Grant04/30/85
  6. Expired09/24/96

The letters patent expired on 09/24/1996: 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: 04/30/1985. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Rilett Energitjanst AB.

SE

Inventors

L. R. (pessoa física)

Technical data

IPC Classification

Priority claims

SE

8002023-3 · 03/14/1980

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

04/30/1985

RPI 758

Notificação para pagamento de retribuição

#13.1

03/05/1985

RPI 750

Republicação - classificação IPC

#15.11

11/27/1984

RPI 736

Deferimento

#9.1

10/23/1984

RPI 731

Exigência - art. 36 da LPI

#6.1

06/05/1984

RPI 711

Solicitação de exame técnico

#4.1

11/08/1983

RPI 681

Carta-patente expirada

#21.1

09/24/1996

RPI 1347

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