Search within the title, abstract, claims, or full patent document: You can
restrict your search to a specific field using field names.
Use TI= to search in the title, AB= for the
abstract, CL= for the claims, or TAC= for
all three. For example, TI=(safety belt).
Search by Cooperative Patent Classifications (CPCs): These are commonly used to
represent ideas in place of keywords, and can also be entered in a search term box. If
you're searching forseat belts, you could also search for
B60R22/00 to retrieve documents that mention safety belts or body
harnesses. CPC=B60R22 will match documents with exactly this CPC,
CPC=B60R22/low matches documents with this CPC or a child
classification of this CPC.
Keywords and boolean syntax (USPTO or EPO format):
seat belt searches these two words, or their plurals and close
synonyms. "seat belt" searches this exact phrase, in order.
-seat -belt searches for documents not containing either word.
For searches using boolean logic, the default operator is
AND with left associativity. Note: this means
safety OR seat belt is searched as (safety OR seat)
AND belt. Each word automatically includes plurals and close synonyms. Adjacent
words that are implicitly ANDed together, such as (safety belt),
are treated as a phrase when generating synonyms.
Chemistry searches match terms (trade names, IUPAC names, etc.
extracted from the entire document, and processed from .MOL files.)
Substructure (use SSS=) and similarity (use
~) searches are limited to one per search at the top-level
AND condition. Exact searches can be used multiple times throughout
the search query.
Searching by SMILES or InChi key requires no special syntax. To search by SMARTS, use
SMARTS=.
To search for multiple molecules, select "Batch" in the "Type" menu. Enter multiple
molecules separated by whitespace or by comma.
Search toolsText
Classification
Chemistry
Measure
Numbers
Full documents
Title
Abstract
Claims
All
Any
Exact
NotAdd AND condition
These CPCs and their children
These exact CPCs
Add AND condition
Exact
Exact Batch
Similar
Substructure
Substructure (SMARTS)
Full documents
Claims onlyAdd AND conditionAdd AND condition
Application Numbers
Publication Numbers
EitherAdd AND condition
Abstract
translated from
Classifications
machine-classified
cpc-machine-classified
fterm-machine-classified
fterm-family-classified
The classifications are assigned by a computer and are not a legal conclusion.
Google has not performed a legal analysis and makes no representation as to the
accuracy of the classifications listed.
The CPC classifications are assigned by a computer and are not a legal conclusion.
Google has not performed a legal analysis and makes no representation as to the
accuracy of the classifications listed.
The F-term classifications are assigned based on a patent family member containing
these classification codes.
The F-term classifications are assigned by a computer and are not a legal conclusion.
Google has not performed a legal analysis and makes no representation as to the
accuracy of the classifications listed.
C01C1/02
Preparation, purification or separation of ammonia
C01C1/04
Preparation of ammonia by synthesis in the gas phase
C01C1/0405
Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst
C01C1/0417
Preparation of ammonia by synthesis in the gas phase from N2 and H2 in presence of a catalyst characterised by the synthesis reactor, e.g. arrangement of catalyst beds and heat exchangers in the reactor
B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J8/00
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
B01J8/02
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
B01J8/04
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
B01J8/0446
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical
B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J8/00
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
B01J8/02
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
B01J8/04
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
B01J8/0446
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical
B01J8/0461
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical in two or more cylindrical annular shaped beds
B01J8/0469
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds the flow within the beds being predominantly vertical in two or more cylindrical annular shaped beds the beds being superimposed one above the other
B01
PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J
CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J8/00
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
B01J8/02
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds
B01J8/04
Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with stationary particles, e.g. in fixed beds the fluid passing successively through two or more beds
B01J2208/00106
Controlling the temperature by indirect heat exchange
B01J2208/00168
Controlling the temperature by indirect heat exchange with heat exchange elements outside the bed of solid particles
Y
GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
Y02
TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
Y02P
CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P20/00
Technologies relating to chemical industry
Y02P20/50
Improvements relating to the production of bulk chemicals
Y02P20/52
Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts