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Official data from INPI

APERFEIÇOAMENTO EM BANDEJA PARA A CONTACTAÇÃO DE GÁS E LÍQUIDO

ConcedidaInvention Patent

Application data

Number

PI7801596

Type

Invention Patent

Filing

03/16/1978

Publication

-

Progress at the INPI

  1. Filing03/16/78
  2. Publication
  3. Examination
  4. Allowance06/21/88
  5. Grant10/25/88
  6. Expired09/21/93

The letters patent expired on 09/21/1993: 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: 10/25/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

U. C. (pessoa física)

US

See this company's full portfolio

Inventors

D. W. (pessoa física)

US

R. K. (pessoa física)

NZ

Technical data

IPC Classification

Priority claims

US

778.797 · 03/17/1977

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

10/25/1988

RPI 940

Notificação para pagamento de retribuição

#13.1

08/30/1988

RPI 932

100

06/21/1988

RPI 922

120

08/04/1987

RPI 876

Petição de recurso

#12.2

03/24/1987

RPI 857

Indeferimento

#9.2

12/16/1986

RPI 843

Exigência - art. 36 da LPI

#6.1

11/22/1983

RPI 683

Conhecimento de parecer técnico

#7.1

11/30/1982

RPI 632

6.2

01/19/1982

RPI 587

Carta-patente expirada

#21.1

09/21/1993

RPI 1190

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