(11) 98705-3426
TrademarkIQ iconTrademarkIQ
Back to search
Official data from INPI

PROCESSO PARA A PRODUCAO DE GAS DE AQUECIMENTO DA QUALIDADE DE GAS DE CIDADE

Em AnáliseInvention Patent

Application data

Number

PI7901297

Type

Invention Patent

Filing

03/04/1978

Publication

-

Progress at the INPI

  1. Filing03/04/78
  2. Publication
  3. Examination12/08/81
  4. Refused01/21/87
  5. Grant
  6. In force

The application was refused on 01/21/1987 and the appeal did not change the decision. The invention was never patented and the technology is in the public domain in Brazil.

Talk to a specialist

Latest action published by the INPI: 04/28/1987. We update with every new RPI gazette, published weekly.

Applicants and inventors

Applicants

METALLGESELLSCHAFT AG

See this company's full portfolio

Inventors

No inventors listed.

Technical data

IPC Classification

No IPC classification.

Prosecution history

Publications in the Brazilian Industrial Property Gazette (RPI).

Republicação - classificação IPC

#15.11

04/28/1987

RPI 862

130

01/21/1987

RPI 848

Arquivamento - Art. 36 §1° da LPI

#11.2

04/08/1986

RPI 807

8.1

08/27/1985

RPI 775

Recurso

#12.1

12/20/1983

RPI 687

Deferimento

#9.1

08/16/1983

RPI 669

Exigência - art. 36 da LPI

#6.1

02/08/1983

RPI 642

Pedido de certificado de adição de invenção

#5.1

05/18/1982

RPI 604

Solicitação de exame técnico

#4.1

12/08/1981

RPI 581

Patent monitoring

Track this patent in real time.

Receive alerts on INPI events, decisions, and expiry dates for your portfolio.