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Official data from INPI

SOLUÇÃO ABSORVENTE E PROCESSO PARA REMOVER H S DE UMA CORRENTE NORMALMENTE GASOSA.

ConcedidaInvention Patent

Application data

Number

PI8300209

Type

Invention Patent

Filing

01/17/1983

Publication

11/01/1983

Progress at the INPI

  1. Filing01/17/83
  2. Publication11/01/83
  3. Examination12/17/85
  4. Allowance02/09/88
  5. Grant08/30/88
  6. Expired07/01/08

The letters patent expired on 07/01/2008: 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: 08/30/1988. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

Exxon Research And Engineering Company.

US

See this company's full portfolio

Inventors

S. G. (pessoa física)

S. W. (pessoa física)

S. L. (pessoa física)

Technical data

IPC Classification

Priority claims

US

339.891 · 01/18/1982

US

339.901 · 01/18/1982

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Concessão da patente

#16.1

08/30/1988

RPI 932

Notificação para pagamento de retribuição

#13.1

06/07/1988

RPI 920

Deferimento

#9.1

02/09/1988

RPI 903

Exigência - art. 36 da LPI

#6.1

02/24/1987

RPI 853

Solicitação de exame técnico

#4.1

12/17/1985

RPI 791

Publicação do pedido de patente

#3.1

11/01/1983

RPI 680

Pedido de patente depositado

#2.1

03/15/1983

RPI 647

Carta-patente expirada

#21.1

Patente extinta em 17/01/98

07/01/2008

RPI 1956

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