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Official data from INPI

CONJUNTO DE CONTROLE DE VOLUME VARIAVEL APERFEICOADO

Em AnáliseInvention Patent

Application data

Number

PI7806253

Type

Invention Patent

Filing

11/07/1977

Publication

-

Progress at the INPI

  1. Filing11/07/77
  2. Publication
  3. Examination
  4. Allowance05/10/83
  5. Grant03/27/84
  6. Terminated06/14/88

The patent was granted on 03/27/1984 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: 06/14/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

ENVIRONMENTAL ELEMENTS CORP

Inventors

D. M. (pessoa física)

K. L. (pessoa física)

S. H. (pessoa física)

Technical data

IPC Classification

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Anuidade - prazo legal encerrado

#18.2

06/14/1988

RPI 921

Concessão da patente

#16.1

03/27/1984

RPI 701

14.1

11/01/1983

RPI 680

Notificação para pagamento de retribuição

#13.1

09/27/1983

RPI 675

Deferimento

#9.1

05/10/1983

RPI 655

Exigência - art. 36 da LPI

#6.1

01/26/1982

RPI 588

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